West Indies Research Articles

Implementation of genomic surveillance of SARS-CoV-2 in the Caribbean: Lessons learned for sustainability in resource-limited settings.

The COVID-19 pandemic highlighted the importance of global genomic surveillance to monitor the emergence and spread of SARS-CoV-2 variants and inform public health decision-making. Until December 2020 there was minimal capacity for viral genomic surveillance in most Caribbean countries. To overcome this constraint, the COVID-19: Infectious disease Molecular epidemiology for PAthogen Control & Tracking (COVID-19 IMPACT) project was implemented to establish rapid SARS-CoV-2 whole genome nanopore sequencing at The University of the West Indies (UWI) in Trinidad and Tobago (T&T) and provide needed SARS-CoV-2 sequencing services for T&T and other Caribbean Public Health Agency Member States (CMS). Using the Oxford Nanopore Technologies MinION sequencing platform and ARTIC network sequencing protocols and bioinformatics pipeline, a total of 3610 SARS-CoV-2 positive RNA samples, received from 17 CMS, were sequenced in-situ during the period December 5th 2020 to December 31st 2021. Ninety-one Pango lineages, including those of five variants of concern (VOC), were identified. Genetic analysis revealed at least 260 introductions to the CMS from other global regions. For each of the 17 CMS, the percentage of reported COVID-19 cases sequenced by the COVID-19 IMPACT laboratory ranged from 0·02% to 3·80% (median = 1·12%). Sequences submitted to GISAID by our study represented 73·3% of all SARS-CoV-2 sequences from the 17 CMS available on the database up to December 31st 2021. Increased staffing, process and infrastructural improvement over the course of the project helped reduce turnaround times for reporting to originating institutions and sequence uploads to GISAID. Insights from our genomic surveillance network in the Caribbean region directly influenced non-pharmaceutical countermeasures in the CMS countries. However, limited availability of associated surveillance and clinical data made it challenging to contextualise the observed SARS-CoV-2 diversity and evolution, highlighting the need for development of infrastructure for collecting and integrating genomic sequencing data and sample-associated metadata.

Transcranial Doppler Ultrasonography-Related Research in the Caribbean Region.

Transcranial Doppler (TCD) ultrasonography is a non-invasive ultrasound technique that uses high-frequency sound waves to measure blood flow velocities in the cerebral vasculature. This review analyzes TCD research in the Caribbean region using a bibliometric analysis of 29 articles from PubMed. The articles were analyzed using Microsoft Excel 2016 and the VOSviewer software (Van Eck and Waltman, Leiden University,Centre for Science and Technology Studies(CWTS),www.vosviewer.com) and characterized various aspects of TCD research, including countries, research themes, authorship, journals, affiliations, and keywords. The majority of the 29 publications came from Cuba (38%), followed by the French West Indies (22%) and Jamaica (20%). Most TCD research focused on sickle cell disease (SCD), accounting for 45% of the studies, followed by 21% of articles on vasospasm and subarachnoid hemorrhage. The use of TCD in brain death and neuro-intensive care was also explored, constituting 17% of the studies. Alternative TCD-monitored treatment options for SCD, such as stem cell transplantation and hydroxyurea, were also frequently investigated. The most productive institutions were Hospital Clínico-Quirúrgico Hermanos Ameijeiras in Havana, Cuba, the Sickle Cell Unit at the University of West Indies (UWI) Mona in Jamaica, the Medical-Surgical Research Center (CIMEQ) in Havana, Cuba, and the SCD Reference Center in Guadeloupe and Martinique in the French West Indies. TCD has been identified as a cost-effective tool for real-time monitoring of cerebral blood flow in many clinical settings, including stroke and SCD, which are prevalent in the Caribbean. Although there is an increase in the trend of using TCD for neuromonitoring in the Caribbean, gaps still exist. Capacity-building initiatives, such as training programs for healthcare providers and the development of local TCD research networks, can improve access to TCD in resource-constrained settings to treat and neuromonitor patients cost-effectively.

Is a dissipation half-life of 5 years for chlordecone in soils of the French West Indies relevant?

Recently, Comte et al. (2022) re-examined the natural degradation of chlordecone (CLD) in the soils of the French West Indies (FWI) by introducing an additional ‘dissipation parameter’ into the WISORCH model developed by Cabidoche et al. (2009). Recent data sets of CLD concentrations in FWI soils obtained by Comte et al. enabled them optimizing the model parameters, resulting in significantly shorter estimates of pollution persistence than in the original model. Their conclusions jeopardize the paradigm of a very limited degradation of CLD in FWI soils, which may lead to an entire revision of the management of CLD contamination. However, we believe that their study is questionable on several important aspects. This includes potential biases in the data sets and in the modeling approach. It results in an inconsistency between the estimated dissipation half-life time (DT50) of five years that the authors determined for CLD and the fate of CLD in soil from the application period 1972–1993 until nowadays. Most importantly, a rapid dissipation of CLD in the field as proposed by Comte et al. is not sufficiently supported by data and estimates. Hence, the paradigm of long-term persistence of CLD in FWI soils is still to be considered.

Environmental and Nesting Variables Associated with Atlantic Leatherback Sea Turtle (Dermochelys coriacea) Embryonic and Hatching Success Rates in Grenada, West Indies

Annual monitoring of leatherback sea turtle (Dermochelys coriacea) nesting grounds in Grenada, West Indies has identified relatively low hatch rates compared to worldwide trends. This study investigated the impact of selected environmental variables on leatherback sea turtle embryonic development and hatching success rates on Levera Beach in Grenada between 2015-2019. The mean number of nests per year and eggs per nest were 667.6 ± 361.6 and 80.7 ± 23.0 sd, respectively. Within excavated nests, 35.6% ± 22.0 sd of eggs successfully developed embryos and 30.6% ± 22.6 sd of eggs successfully hatched. The number of eggs per nest, along with embryo and hatching success rates, differed by nesting year. Embryo development success rate was associated with nest location, and both embryo development and hatching success rates were positively associated with nest depth and negatively associated with the percentage of eggs exhibiting microbial growth and with the presence of inspissated yolk. There was no embryo development or hatchling success association with month of the nesting season, distance from the high-water mark, distance from vegetation, nor maternal carapace length. The mean nest temperature was 31.7 °C ± 1.64 sd and mean temperatures during the middle third of egg incubation suggest clutches are highly skewed towards a preponderance of female hatchlings. Histopathologic findings in hatchling mortalities included severe, acute, multifocal, heterophilic bronchopneumonia with intralesional bacteria in 4/50 (8%) hatchlings. Data from this study guide conservation strategies by identifying risk factors and further avenues of research needed to support reproductive success of leatherback sea turtles in Grenada and the greater Caribbean region.

Characterizing Past Communities to Build Future Ones: Lessons from Caribbean Conservation Paleobiology

The Caribbean is one of the most well-studied biodiversity hotspots, but the diversity of today’s Caribbean is only a fraction of what once existed there, as natural and anthropogenic processes have contributed to extinction and extirpation across multiple taxonomic groups. Given this long-term history of environmental perturbations and human impacts, paleobiology is well-suited to inform ongoing conservation needs in the Caribbean, which continues to be impacted by habitat degradation, species introductions, and other global change phenomena. I show how fossil, archaeological, and ecological data elucidate patterns of biodiversity loss and resilience, with direct implications for conservation management. While conservation paleobiology has significant potential in the Caribbean, it also faces major challenges in implementation, in part due to colonial histories and practices of parachute science. I summarize how this colonial legacy perpetuates knowledge and resource gaps, and outline ways in which we can move toward an equitable conservation paleobiology. One path forward is through education and partnership with local communities. I highlight my program, NEET Young Innovators, a partnership between the University of Texas at Austin, the Negril Education Environment Trust, the University of the West Indies Mona, and the Jamaican Ministry of Education and Youth. The NEET Young Innovators program develops place-based, experiential curriculum and STEM camps for Jamaican students and teachers. Capitalizing on paleobiology’s status as a “gateway science,” we created and implemented a suite of conservation paleobiology lesson plans in a STEM camp designed to cultivate environmental stewardship and broaden awareness of Caribbean natural history and biodiversity among Jamaican youths. Through integrative research, reflection, and inclusive partnership, paleobiology can guide the conservation, management, and restoration of biodiversity in this critical ecosystem.

Widespread stem snapping but limited mortality caused by a category 5 hurricane on the Caribbean Island of Dominica

Hurricanes are projected to increase in frequency and severity over the coming century, and predicting the effects of strong hurricanes on forest communities requires an understanding of the damage patterns caused to individual trees and what drives those damage patterns. To better understand damage patterns caused by a category 5 hurricane, we censused nine permanent vegetation plots across the island of Dominica, West Indies, nine months after Hurricane Maria took a direct path over the island. We measured size, damage, and mortality for all adult trees, and measured wood density and carbon content for the 44 most common species to calculate biomass and carbon relocation from the hurricane. Despite widespread major tree damage (76% of trees), mortality nine months after the hurricane was relatively low (10% of trees). The most common damage types were stem snapping (40% of trees) and major branch damage (26% of trees), but the damage types with the highest rates of mortality were uprooting and being crushed by a neighboring tree (33% and 47% of uprooted and crushed trees died, respectively). Larger individual trees and species with lower wood density were more susceptible to snapping, uprooting and mortality, and trees on steeper slopes were more prone to being crushed by neighboring trees. Hurricane Maria caused an average loss of 44 Mg ha−1 of aboveground carbon and 90.3 Mg ha−1 of aboveground biomass. Synthesis – Trees in these hurricane-prone forests show a strong ability to survive extremely strong storms even when severely damaged, but substantial amounts of forest carbon are redistributed to the forest floor even when mortality rates are relatively low. Our data suggest that these hurricane-prone forests will continue to shift toward smaller, high wood-density species with increasing hurricane frequency and intensity.

Rate of increase and current abundance of humpback whales in West Greenland

Aerial line transect surveys of the density of humpback whales (Megaptera novaeangliae) conducted off West Greenland eight times between 1984 and 2007 were used to estimate the rate of increase on the summer feeding ground. Only surveys in 1993, 2005 and 2007 had enough sightings to construct independent density estimates, whereas the surveys in 1984–85 and 1987–89 had to be merged and treated as two surveys. The annual rate of increase was 9.4% yr–1 (SE = 0.01) between 1984 and 2007. This rate of increase is higher than the increase estimated at the breeding grounds in the West Indies, but is of the same magnitude as the observed rate of increase at other feeding grounds in the North Atlantic. A matrix model based on observed life history parameters revealed that the theoretical growth rate of a humpback whale population ranged between 1 and 11%. This confirms that the observed growth in West Greenland is within the plausible values. The survey in 2007 was used to make a fully corrected abundance estimate including corrections for whales that were submerged during the passage of the survey plane. The line transect estimate for 2007 was 1,020 (CV = 0.35). When the estimate was corrected for perception bias with mark-recapture distance sampling (MRDS) methods, the abundance increased to 1,505 (0.49). A correction for availability bias was developed based on time-depth-recorder information on the time spent at the surface (0–4m). However, used directly this correction leads to a positively-biased abundance estimate and instead a correction was developed for the non-instantaneous visual sighting process in an aircraft. The resulting estimate for 2007 was 3,272 (CV = 0.50) for the MRDS analysis. An alternative strip census estimate deploying a strip width of 300m resulted in 995 (0.33) whales. Correction for perception bias resulted in 991 (0.35) whales and corrected for the same availability bias as for the MRDS method resulted in a fully corrected estimate of 2,154 (0.36) humpback whales in West Greenland in 2007.

Indices Development for Player’s Performance Evaluation through the Super-SBM Approach in Each Department for All Three Formats of Cricket

Player performance evaluations in all three formats of cricket have been a topic of great concern for sports analysts and research experts. This study proposed a comprehensive performance estimation tool that incorporates all the essential inputs–outputs and evaluates a cricketer’s overall performance. This research introduced three different estimation indices for player efficiency in all three formats of cricket for batting, bowling, and fielding. Further, this research employed the DEA Super-SBM model to evaluate the player’s efficiency in batting, bowling, and fielding departments of all three formats. The study estimates the most efficient batsman, bowler, and fielder in cricketing history by using the data of international cricketers (1877–2019). The results indicate that, compared to the traditional parameters, the proposed study indices are more accurate and comprehensive in nature. The most efficient batsman, bowler, and fielder in all three formats are given, respectively: (i) Sir Bradman, Sachin Tendulkar, and Virat Kohli; (ii) Muralitharan, Mitchell Starc, and Umar Gul; and (iii) Saleem Yousuf, Luke Ronchi, and Scott Edwards. For teams, England, Australia, and India were determined to be the most efficient in batting for all three formats; the West Indies, Australia, and Pakistan are the most efficient in bowling; and the Australian (Test & ODIs) and South African teams are efficient in the fielding department.

Correlates of Health-Related Quality of Life in Community-Dwelling Older Adults in Guadeloupe (French West Indies): Results from the KASADS Study.

The aim of this study was to determine the correlates of health-related quality of life (HRQoL) in community-dwelling older adults in Guadeloupe. We used the Karukera Study of Aging-Drugs Storage (KASADS), an observational, cross-sectional study on community-dwelling older people living in Guadeloupe. A visual analogue scale ranging from 0 to 100 was used to assess HRQoL. The study sample consisted of 115 patients aged 65 years or older; 67.8% were women. Participants were 76 (±7.8) years old with a mean HRQoL of 66.2 (±20.3). The correlates of HRQoL were complaints of pain (p < 0.001) and IADL dependency (p = 0.030) after adjustment. We found no significant interactions between HRQoL and other variables such as marital status, socio-educational level and cognitive decline. Pain and IADL dependency were independently associated with lower HRQoL in community-dwelling older people in Guadeloupe.

Prevalence of congenital anomalies in the Dutch Caribbean islands of Aruba, Bonaire, and Curaçao.

Congenital anomalies represent an important global health issue. Data on the prevalence and pattern of congenital anomalies in the Caribbean region are scarce and lacking altogether in Aruba, Bonaire and Curaçao (ABC islands). We performed a population-based surveillance study to determine the prevalence of structural congenital anomalies in the ABC islands, including all live births and stillbirths between January 1, 2008 and December 31, 2017 with major congenital anomalies according to EUROCAT guide 1.5. Terminations of pregnancy for fetal anomaly were included as well. Cases were identified by active case ascertainment, using multiple sources including pediatric patient files and discharge letters, delivery records, and clinical genetic patient files. Total and subgroup prevalence rates were compared between the three islands and to the French West Indies and Northern Netherlands. Total prevalence of congenital anomalies on the ABC islands was 242.97 per 10,000 births. Total prevalence of congenital anomalies in Bonaire (325.15 per 10,000 births) was higher compared to Aruba (233.29 per 10,000 births) and Curaçao (238.58 per 10,000 births), which was mainly attributable to a higher prevalence of limb anomalies, in particular polydactyly, in Bonaire. Total prevalence of congenital anomalies on the ABC islands was comparable to the French West Indies (248.69 per 10,000 births) but significantly lower compared to the Northern Netherlands (298.98 per 10,000 births). In the subgroup prevalence analysis, the prevalence of polydactyly and atrial septal defect on the ABC islands was significantly higher compared with the French West Indies and the Northern Netherlands, while the prevalence of congenital anomalies of the kidney and urinary tract and genetic disorders was significantly lower. This is the first study to establish the prevalence and pattern of congenital anomalies on the ABC islands, which is important to inform healthcare managers and policymakers and to provide a basis for continuous surveillance of congenital anomalies.

The Health Care Trajectories of Older People in Foster Families: Protocol for an Observational Study.

With aging of the population, the search for alternative models of care adapted to older people with dependency is necessary. In this setting, foster families (1-3 older people per family) could be an alternative to nursing homes, residential care facilities, or community- and home-based care. The KArukera Study of Ageing in Foster Families is a prospective cohort study designed to investigate the care pathways of older people with dependency in foster care over a year. The 1-year hospitalization rate (main objective), cost of hospitalization, incidence of mortality, prevalence of geriatric syndromes, and quality of life of residents will be assessed. Quality of life and burnout of their respective foster caregivers will also be studied. This study cohort will include 250 older people living in foster families in Guadeloupe (French West Indies), as well as their respective foster caregivers. Both older people and caregivers will be interviewed concurrently on site at three time points: (1) at baseline, (2) at 6 months, and (3) at 12 months. For older people, we will collect anthropometric measures, cognitive impairment, depressive and anxiety symptoms, functional abilities, physical frailty, information on general health status, quality of life, and care pathways (hospitalization, mortality, and medical and paramedical consultations). We will also assess the quality of life and burnout symptoms of family caregivers at each follow-up. A phone update of vital status (alive or death) and care pathways of residents will be carried out at 3 and 9 months after the baseline examination. Recruitment opened in September 2020 and ended in May 2021, with 109 older people recruited and 56 respective foster caregivers. The 1-year follow-up was ended in June 2022. Data analyses are ongoing and the first results are expected to be published in May 2023. Foster families are a potentially innovative way to accommodate dependent older people. This study could help define the clinical profile of older people adapted to foster families in the transition from frailty to dependency. The effectiveness of foster families, in terms of hospitalizations and mortality, will be compared with other models of care, particularly nursing homes. In this setting, a twin study carried out in nursing homes in Guadeloupe with similar aims and outcomes will be conducted. Beyond mortality and morbidity, the numerous outcomes will allow us to assess the evolution of geriatric syndromes over time. ClinicalTrials.gov NCT04545775; https://clinicaltrials.gov/ct2/show/NCT04545775. DERR1-10.2196/40604.

Worldwide prevalence of neuromyelitis optica spectrum disorder (NMOSD) and neuromyelitis optica (NMO): a systematic review and meta-analysis.

Neuromyelitis optica spectrum disorder (NMOSD) is a progressive demyelinating disease of the central nervous system that has overlapping symptoms with multiple sclerosis (MS) but differs from it in a variety of ways. Previous studies have reported conflicting results trying to estimate the number of individuals affected by them which is why we designed this systematic review and meta-analysis to estimate the worldwide prevalence and incidence of NMOSD/NMO based on current evidence. We searched PubMed, Scopus, EMBASE, Web of Science, and gray literature including references from the identified studies, review studies, and conference abstracts which were published up to February 1, 2022. We used all MeSH terms pertaining to "NMOSD," "NMO," and all the terms on "prevalence," "incidence," and "epidemiology" to identify the search components. Pooled effect sizes were measured using random-effect model by DerSimonian-Laird. The prevalence and incidence rates of NMOSD/NMO ranged from 0.07 to 10 and 0.029 to 0.880 per 100,000 population, respectively. The overall pooled prevalence of NMO per 100,000 population was 1.54 (I2: 98.4%, 95% CI: 1.13-1.96, P< 0.001) based on the 2006 criteria, 1.51 (I2: 99.4%, 95% CI: 1.21-1.81, P < 0.001) based on the 2015 criteria and 2.16 (I2: 89.4%, 95% CI: 1.46-2.86, P < 0.001) based on the 2006/2015 criteria. The overall annual incidence of NMO per 100,000 population was 0.155 (I2: 95%, 95% CI: 0.115-0.195, P < 0.001) based on the 2006 criteria and 0.278 (I2: 100%, 95% CI: 0.135-0.420, P < 0.001) based on the 2015 criteria. The prevalence rates were highest in French West Indies and South Korea, and lowest in Cuba and Australia, based on the 2006 and 2015 criteria, respectively. Also, the highest annual incidence rates were obtained for Sweden and Slovak republic and the lowest for Cuba and Australia based on the 2006 and 2015 criteria, respectively. All estimated rates were higher among females compared to males. Although rare, NMOSD/NMO impact affected individuals in devastating ways. Several large-scale prospective studies are required to reach a comprehension of the epidemiological aspects of these notorious demyelinating conditions.

The Change in Test Cricket Performance Following the Introduction of T20 Cricket

International cricket has evolved from predominantly Test cricket, to shorter formats of competition. With the high player overlap between formats, the introduction of Twenty20 (T20) cricket is proposed to have influenced Test cricket and therefore the tactical strategies coaches and players should attempt to implement. The aim of this study was to identify the change in specific Test cricket performance metrics following the introduction of T20 cricket across a 20-year period (2000-2020). A total of 667 matches involving the top eight International Cricket Council (ICC) Test-cricket nations were analyzed. Overall, the introduction of T20 cricket has been associated with a change in the way in which Test cricket is currently played. Results identified significantly ( p &lt; 0.001) more runs being scored by sixes and less by fours. A significant (17.4%; p &lt; 0.001) decrease was also present in the percentage of Test matches ending in draws (23.5% in 2000 to 6.4% in 2020). Run rates increased for five teams (India, New Zealand, Pakistan, South Africa, and Sri Lanka), remained constant for one team (West Indies), and decreased for two teams (Australia, England) across the entire period studied. However, there was no change in the number of days Test matches lasted, with the average number of days continuing to last into day five (4.5 decreasing to 4.3). Findings highlight that improving the ability to strike a greater number of sixes, increase the overall run rate, and facilitate strike rotation when batting to be a focus for coaches and players alike. Future studies should ascertain whether the introduction of T20 has had an effect on One Day International (ODI) performance variables while further considering the impact of home advantage and team quality, to facilitate enhanced tactical and strategic decision-making.

COVID-19 Vaccine Uptake, Acceptance, and Reasons for Vaccine Hesitancy: A Cross-Sectional Study Among Pregnant Women in Trinidad, West Indies.

Pregnant women are at greater risk for severe COVID-19 disease and are a priority group for vaccination. Trinidad and Tobago (TTO) introduced COVID-19 vaccination for pregnancy in August 2021, however uptake is presumed to be low. The objective was to determine the COVID-19 vaccine acceptance and uptake rates among pregnant women in TTO and reasons for vaccine hesitancy. This was a cross-sectional study on 448 pregnant women conducted at specialized antenatal clinics within the largest Regional Health Authority in TTO, and at one private institution from February 1 to May 6, 2022. Participants completed an adapted WHO questionnaire on reasons for COVID-19 vaccine hesitancy. Logistic regression was used to assess factors affecting vaccination decisions. The vaccine acceptance and uptake rates in pregnancy were 26.4% and 23.6%, respectively. The main reason for vaccine hesitancy was lack of research on the COVID-19 vaccine in pregnancy (70.2%), where 75.5% of women believed the vaccine would harm their babies and 71.2% believed there was not enough data. Women seeking care in the private sector (OR: 5.24, 95% CI: 1.41-19.43) and who had comorbidities (OR: 3.72, 95% CI: 11.57-8.83) were more likely to take the vaccine, while Venezuelan non-nationals (OR: 0.09, 95% CI: 0.01-0.71) were less likely to take the vaccine. Older women (OR: 1.80, 95% CI: 1.12-2.89), women with tertiary education (OR: 1.99, 95% CI: 1.25-3.19), and women seeking care in the private sector (OR: 9.45, 95% CI: 4.36-20.48) were more likely to accept the vaccine. Lack of confidence in the vaccine was the main reason for hesitancy, which may reflect paucity of research, lack of knowledge or misinformation of the vaccine in pregnancy. This highlights the need for more targeted public education campaigns and promotion of the vaccine by health institutions. The knowledge, attitudes, and beliefs of pregnant women obtained from this study can guide the development of vaccination programs in pregnancy.

Using focus groups to plan culturally acceptable primary cervical cancer screening in Grenada, West Indies.

To document Grenadian women's knowledge about cervical cancer and human papillomavirus (HPV) infection, as well as their attitudes towards primary cervical cancer screening methods. In this qualitative study, we used focus groups in Grenada to gather information concerning women's knowledge about, attitudes towards and perceptions of screening for cervical cancer and general knowledge about HPV. Ten focus groups comprising 73 participants representing 5 of the 6 parishes in Grenada were conducted with women aged 19-59. Participants were asked about pelvic exams, Pap smears, HPV, reasons for seeking or avoiding cervical cancer screening and how different modalities of testing might affect their decision-making. Responses were then coded and organized into common themes. While many respondents had heard of HPV, far fewer knew about its causative role in cervical cancer, how to prevent HPV infection or testing for the high-risk HPV types that cause almost all cases of cervical cancer. Many participants were aware that cervical cancer screening was beneficial, but numerous barriers to obtaining that screening were noted, including concerns about privacy and stigma, potential discomfort, and the cost and inconvenience involved. Our findings have implications for future cervical cancer screening efforts in Grenada. Central to these efforts should be a focus on educating Grenadians about the role of HPV infection in cervical cancer and the importance of early detection through screening. In addition, addressing issues of stigma and privacy are key to eliminating cervical cancer in Grenada.

Top Twelve Cancers in Jamaica 2008

Objective: To determine the top twelve cancers in Jamaica in the year 2008 and to examine the distribution of cancer of the endometrium as well as non-Hodgkin’s lymphoma in 2008. Methods: The study included all fourteen parishes. Data was obtained from the Jamaica Cancer Registry located in the Pathology Department of the University of the West Indies. Population denominators were obtained from the 2011 census taken by the Statistical Institute of Jamaica. The statistical package which was used to analyze the data was SPSS. Results: The top twelve cancers were determined using the crude incidence rate (CIR). In descending order, the top twelve cancers were prostate cancer (36.6), cancer of the breast (25.7), cancer of the cervix (23.2), cancer of the lung (7.0), cancer of the endometrium (6.9), cancer of the colon (5.2), carcinoma primary unknown (4.4), non-Hodgkin’s lymphoma (3.5), cancer of the stomach (3.0), cancer of the skin (2.6), cancer of the urinary bladder (1.8), cancer of the rectum (1.8) and cancer of the thyroid (1.1). It was also determined that cancer of the endometrium is mostly prevalent in the age group 55 years to 79 years and the highest probability of developing this cancer would be in the parishes of Kingston and St. Andrew and St. Catherine. In the case of non-Hodgkin’s lymphoma, it is mostly prevalent in the age group 45 years to 64 years. In Jamaica in 2008 it was more dominant in females than males (male/female ratio, 0.83). Based on the crude incidence rate, the highest probability of developing this cancer occurred in the parishes of Kingston and St. Andrew and St. Catherine. Conclusion: In mitigating against cancer, it is important to study the onset, the age groups affected as well as gender. It is also important to look at geographical locations to see the probability of developing a particular type of cancer. Once this is done then appropriate screening and safety protocols should be followed by the various health administrators.

Farmers' Views and Tools Compared with Laboratory Evaluations of Parasites of Meat Goats in French West Indies.

Gastrointestinal nematodes (GINs) are a major health problem in tropical goat husbandry. The control of GIN has been nearly exclusively reliant on the use of anthelmintic treatments. Their wide use has provoked the appearance and diffusion of anthelmintic resistance. Therefore, there is a need to use anthelmintics only when they are really needed. This strategy of targeted selective treatment (TST) has been recommended. The selection of animals to be treated has been based either on the objective measures of GIN intensity (fecal nematode egg counts) performed in the laboratory or on indirect assessment such as anemia (FAMACHA©), diarrhea score or weight gains, particularly in sheep. The roughness of hair has also been proposed in goats. These indicators can be handled by the farmer. Their opinion on the importance of GINs, and the indicators that they are ready to accept and use have very rarely been studied. Goat for meat production is important in the French West Indies (especially in Guadeloupe) and GIN infection may significantly alter this production. Eighteen farmers participated in semi-directive interviews in order to appreciate their relation to goat GIN infection and the solutions they considered. Seventeen farms were investigated for fecal nematode egg counts, FAMACHA©, body score, and roughness of hair. The average infection by GINs was high (average fecal egg count 1562 and standard deviation 2028) with a wide range from one farm to another (from 0 to 25,000 eggs of GIN per gram of feces). The Haemonchus genera was predominant (54%), followed by Trichostrongylus (37%) and Oesophagostomum (9%). Young goats were less infected than adult goats since they were not yet grazing; males were more infected than females; and the Creole breed was more infected than the other breeds. Among the farming types, the professional ones were less infected compared with the traditional or mixed agriculture and husbandry farms. Those using targeted selective treatment did not have a significantly higher GIN infection than those treating the whole herd. Most of the characteristics were related and multivariate analysis could not match the intensity of GIN infection with any parameter. The frequency of anthelmintic treatments was negatively related to the use of body score, FAMACHA©, and hair roughness. The use of semi-directive interviews provided a wider understanding of the strategies and problems of farmers. The farmers valued their animals very much and diseases, in general, were a preoccupation, whereas parasites were not a major issue for traditional farmers. This is due to the important use of indicators and the belief in their value that gives comfort to the farmers that the parasites are being controlled. The extension services have well diffused the practice of indicators to the goat farmers of Guadeloupe, with some depending less on anthelmintics to control the gastrointestinal nematodes by using targeted selective treatments.

Migratory destinations and timing of humpback whales in the southeastern Caribbean differ from those off the Dominican Republic

Humpback whales wintering in the entire West Indies chain are widely treated as comprising a single breeding population. However, most areas outside of Silver Bank and Samana Bay, Dominican Republic, are poorly and sporadically studied. Data is presented on the timing and movement patterns of 262 whales from the southeastern Caribbean, extending from Antigua in the north to Trinidad and Tobago in the south. Whales from the area were re-sighted in all of the major North Atlantic feeding grounds. However, of the 43 individuals re-sighted in feeding areas, animals from eastern feeding grounds were significantly over-represented, while those from western feeding areas were under-represented. This is in direct contrast to the pattern previously demonstrated in the Dominican Republic. Supporting this finding, the proportion of whales showing visible scarring on the flukes from non-lethal attack by killer whales was similar to that previously shown for Norway; yet lower than that presented from western feeding areas. The seasonal pattern of distribution in the southeastern Caribbean shows a peak of occurrence about six weeks later than in the Dominican Republic, and there is little overlap in the periods of greatest use. Sightings are uncommon before February. The peak in abundance occurs during March and April, declining during May, with some sightings extending into June. This is consistent with the pattern of sightings from historical whaling records in the southeastern Caribbean. These results suggest that the humpbacks mating and calving in this region are not a representative subset of those that winter in the Dominican Republic. Further studies will be needed to examine the spatial nature of the pattern shown here and define the nature and limits of this group, but these results suggest that some part of this breeding area represents a previously un-described distinct population segment within the North Atlantic. Given this, the widely held idea that there is a single West Indies humpback whale distinct population segment is in need of reconsideration.

The effect of anaerobic digestate tea on the growth of lemon grass (Cymbopogan citratus)

AbstractIn this paper, we present the novel use of digestate tea to boost the rates of growth of Cymbopogan citratus, the lemon grass plant. The digestate was sourced from a functioning anaerobic digester at the University of the West Indies Cave Hill Campus, and made into a slurry (digestate tea). The slurry was then applied to the plants in varying surface concentrations. The digestate tea had a profound effect on the growth rates of the plants and resulted in an eight times increase in the overall biomass yield at the highest concentration of digestate tea applied (0.21 ± 0.06 kg, 5.5 L m−2), when compared with the control (0.026 ± 0.004 kg, 0 L m−2). This type of fertilization can tremendously boost lemon grass production, and hence, the production of the valuable lemon grass essential oil in a sustainable and environmentally friendly manner. © 2023 Society of Industrial Chemistry and John Wiley &amp; Sons Ltd.

Entrainment and deposition of boulders in a gravel bed river

Abstract. Bedload transport, entrainment of coarse sediment by a river, is inherently a stochastic and intermittent process whose monitoring remains challenging. Here, we propose a new method to characterize bedload transport in the field. Using an uncrewed aerial vehicle (UAV) equipped with a high-resolution camera, we recorded yearly images of a bar of the Grande Rivière des Vieux-Habitants, a gravel bed river located on Basse-Terre Island (Guadeloupe, French West Indies). These images, combined with high-frequency measurements of the river discharge, allow us to monitor the evolution of the population of sediments of a diameter between 0.5 and 0.75 m on the riverbed. Based on this dataset, we estimate the smallest discharge that can move these boulders and calculate the duration of effective transport. We find that the transport of boulders occurs for approximately 10 h yr−1. When plotted as a function of the effective transport time, a given population of boulders decreases exponentially with an effective residence time of approximately 17 h. This exponential decay suggests that the probability of dislodging a grain from the bed is proportional to the number of grains at repose on the bed, an observation consistent with laboratory experiments. Finally, the residence time of bedload particles on a riverbed can be used to evaluate bedload discharge.