Epidemiological Assessment Research Articles

Opinion: How will advances in aerosol science inform our understanding of the health impacts of outdoor particulate pollution?

Abstract. Air pollution, characterized by high levels of particulate matter (PM), poses the greatest environmental threat to human health, causing an estimated 7 million deaths annually and accounting for 5 % of the global gross domestic product (GDP). While the health impacts of PM are influenced by the toxicity of its individual chemical constituents, the mortality burden of PM is solely based on its total mass concentration. This is because of a lack of large-scale, high-resolution data on PM chemical composition, needed for epidemiological assessments. Identifying which PM constituents are harmful to health has been the “holy grail” of atmospheric science since the landmark 1993 study on six US cities established a definitive link between PM and mortality. Ever since, atmospheric scientists have focused on understanding aerosol composition, emission sources, and formation pathways, while longitudinal epidemiological studies have required individual-level exposure data, employing land use regression models for the prediction of exposures at fine resolutions. In this opinion article, we argue that the time has come to shift the focus towards incorporating PM chemical composition into epidemiological health assessments, laying the foundation for the development of new regulatory metrics. This shift will enable the creation of targeted guidelines and subsequent regulations, prioritizing mitigation efforts against the most harmful anthropogenic emissions. Central to this shift is the availability of global, long-term, high-resolution data on PM chemical composition that are obtained through field observations and modelling outputs. In the article, we underscore key milestones within aerosol science that have been integral for advancing this foundational shift. Specifically, we examine emerging modelling tools for estimating exposure to individual PM components, present the type of ambient observations needed for model developments, identify key gaps in our fundamental understanding of emissions and their atmospheric transformation, and propose advancing cross-disciplinary collaboration between aerosol scientists and epidemiologists to understand the health impacts of individual PM components. We contend that aerosol science has now reached a pivotal moment in elucidating the differential health impacts of PM components, representing a first step towards their incorporation into air quality guidelines.

SINAVE’s quality: completeness for Meningococcal Disease – Northern Portugal, 2020-2022

Abstract Due to Meningococcal’s Disease (MD) severity and impact in public health, in Portugal it is mandatory to notify the suspicious cases to implement effective control measures. MD cases are notified in the National Surveillance System (SINAVE), which triggers epidemiological investigation, risk assessment and community intervention. The quality of SINAVE is defined by various attributes, being their evaluation crucial to improve and guarantee quality standards. Our goal is to evaluate the external and internal completeness of SINAVE for MD in northern Portugal from 2020 to 2022. We have conducted a cross-sectional study, using MD cases from 2020 to 2022. External Completeness was estimated using a two-source capture-recapture method, with data from SINAVE and Diagnostic-Related Group (DRG) cases. Hospital readmissions’, duplicates and cases from other regions were excluded. Internal completeness of SINAVE was accessed for each case and for each non-mandatory variable. For external completeness (EC) analysis, 21 of the 23 DRG cases were eligible for matching. Out of 31 SINAVE confirmed cases, 20 were eligible for matching. EC of SINAVE was 66,7%. For internal completeness (IC) analysis, we excluded 7 cases that did not meet the criteria for inclusion. The mean IC was 73,5% (min 38,5%, max 85,7%) when analysing by case. When assessing each of the 30 non-mandatory variables of the reports, 7 (23,3%) had an IC of 100% and 13 (43,3%) had an IC of 0%, the mean value was 49,7%. SINAVE assessment, as a routine, is crucial to identify the need for improvement. Completeness is fundamental to ensure an effective public health response. Our results confirm under-reporting and incomplete report of MD. There is a need to strengthen the improvement of data quality of SINAVE. Future studies may be important to estimate true incidence of MD and compare the results for other diseases in order to improve public health actions. Key messages • Meningococcal disease requires timely public health intervention. • valuation of the surveillance system is crucial, with completeness playing an important role for data quality and prompt response.

Signal detection and assessment supporting syndromic surveillance during the UEFA EURO 2024

Abstract Background Mass gatherings like the UEFA European Football Championship in Germany pose a challenge for public health, elevating the risk of infectious disease outbreaks. The Robert Koch Institute (RKI) is performing intensified surveillance during this event, including data from emergency departments (ED). So far, no standardised process for signal detection, their assessment and communication exists for ED surveillance. Methods We reviewed the literature to identify an appropriate signal detection method for ED surveillance. We tested different aggregation levels of the ED data, to ensure sufficient quality with sparse categories. After consulting with international experts, we defined a standardized process for signal assessment. We developed an interactive dashboard to investigate anomalies by further analysing the ED data. Results We used the Farrington Flexible algorithm, but expanded its functionality to perform daily instead of weekly monitoring. Aggregating to federal state level or in five age categories provided enough daily data for the algorithm. During the assessment, identified signals will be automatically scored based on pre-defined criteria (e.g. excess number of cases, reoccurrence in previous days). Signals with a high score will be forwarded to an epidemiological assessment, where they are manually evaluated based on standardised questions (e.g. expected seasonality, disease severity). Surveillance experts at RKI discuss them further and decide the course of communication and possible further measures. We developed an interactive dashboard in which signal detection and assessment is visualized. Conclusions Syndromic surveillance using ED data is used as an information source for early warning during a mass sporting event in Germany. Signal detection enables the identification of potential outbreaks, while the standardized assessment process ensures an efficient way to prioritize and steer communication efforts across public health services. Key messages • Syndromic surveillance using signal detection has previously proven valuable to detect potential outbreaks of infectious diseases during mass gatherings. • A standardised signal assessment process including an automatic and manual component ensures a sustainable and efficient way to prioritize possible incidents and steer public health communication.

8582 THE PREVALENCE OF POLYCYSTIC OVARY SYNDROME IN ADULT WOMEN: THE IMPACT OF GEOGRAPHIC REGION

Abstract Disclosure: M. Amiri: None. S. Hatoum: None. R.P. Buyalos: None. A. Sheidaei: None. R. Azziz: Consulting Fee; Self; Spruce Biosciences, May Health, Core Access Surgical Technologies, Acacia Bio, Fortress Biotech, and Rani Therapeutics. Stock Owner; Self; Martin Imaging. Background: Polycystic ovary syndrome (PCOS) is a common hormonal disorder that affects women of reproductive age and is associated with various health complications. The reported prevalence of PCOS varies widely. However, variations in PCOS prevalence by geographic region are unclear. Objectives: This systematic review and meta-analysis aimed to compare PCOS prevalence in adults across World Health Organization (WHO) regions. Materials and methods: A search of PubMed and Embase was conducted for studies on PCOS prevalence in unselected populations published from inception to July 2023 using various diagnostic criteria. Studies were categorized according to: a) PCOS criteria (NIH 1990 [PCOS phenotypes A&B], AE-PCOS 2006 [PCOS phenotypes A-C], Rotterdam 2003 [PCOS phenotypes A-D], and ‘other/self-reported’ criteria); b) subject assessment type (direct assessment, survey/indirect assessment, or mixed assessment); and c) study quality, assessed using the PCOS Epidemiology and Phenotype (PEP) quality assessment tool. Meta-analyses were performed using fixed-effects or random-effects models depending on the heterogeneity among the studies. Publication bias was assessed using the Egger’s regression test and funnel plots. Subgroup analyses were conducted based on PCOS criteria, assessment types, study quality, and WHO region. Results: Of 6,644 records, 50 studies with including a total of 70,146 adult women (age ≥18 years) were included. The overall pooled prevalence of PCOS was 9.7% (95% CI: 8.25, 11.38) with a pooled PCOS prevalence by criteria of NIH 7.7% (95% CI: 6, 9.83), Rotterdam 11.83% (95% CI: 9.15, 15.17), AE-PCOS 11.48% (95% CI: 7.5, 17.18), and other/self-report 10.05% (95% CI: 6.63, 14.96). High-quality studies reported lower prevalences for Rotterdam and NIH criteria than low-qualities (6.99% vs 10.07% for NIH and 11.07% vs 20.97% for Rotterdam), with all studies using AE-PCOS being high-quality and all studies using other/self-report criteria being low-quality. Among high-quality studies using direct/mixed assessments, PCOS prevalence by NIH was highest in Western Pacific Region (8.19%) and lowest in Europe (6.47%), whereas by Rotterdam, it was highest in Europe (21.30%) and lowest in Western Pacific Region (7.67%). We also observed that highest PCOS prevalence based on AE-PCOS criteria was in Europe (16.09%) and lowest in Western Pacific Region (7.43%). Publication bias was not significant (Egger’s coefficient = 1.2, 95% CI: -1.49, 3.9, p = 0.38), and funnel plot showed a nearly symmetrical distribution of studies around the estimated effect size. Conclusions: This meta-analysis revealed that the reported PCOS prevalence in adults varies widely by WHO geographic region. Study quality, assessment type and diagnostic criteria for PCOS impact the assessment, with low-quality studies overestimating PCOS prevalence. Presentation: 6/2/2024

8558 Prevalence of Polycystic Ovary Syndrome in Adolescent Girls by World Health Organization Region

Abstract Disclosure: S. Hatoum: None. M. Amiri: None. R.P. Buyalos: None. A. Sheidaei: None. R. Azziz: Consulting Fee; Self; Spruce Bioscience, May Health, Core Access Surgical Technologies, Acacia Bio, Fortress Biotech, Rani Therapeutics. Stock Owner; Self; Martin Imaging. Introduction: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women of reproductive age. The use of several diagnostic criteria imposes a challenge for healthcare providers, especially in adolescents, whose PCOS symptoms may mimic normal pubertal changes. Objectives: This systematic review and meta-analysis aims to estimate the pooled prevalence of PCOS in adolescents using various diagnostic criteria in total and by WHO region. Methods: We systematically reviewed Pubmed and Embase through July 2023 to capture all studies performed in medically unbiased adolescent populations (age <18 years) reporting PCOS prevalence. Studies were categorized according to: a) PCOS criteria (NIH 1990 [PCOS phenotypes A&B], AE-PCOS 2006 [PCOS phenotypes A-C], Rotterdam 2003 [PCOS phenotypes A-D], and ‘other/self-reported’ criteria); b) subject assessment type (direct assessment, survey/indirect assessment, or mixed assessment); and c) study quality, assessed using the PCOS Epidemiology and Phenotype (PEP) quality assessment tool. We performed a meta-analysis using fixed-effects or random-effects models depending on the heterogeneity among the studies. We conducted subgroup analyses based on PCOS criteria, assessment type, study quality, and WHO region. Results: 6,644 studies were initially retrieved, of which 11 were eligible for inclusion including a total of 10,516 adolescents, yielding 15 study groups according to the diagnostic criteria. Considering all studies, PCOS prevalence was 4.98% according to the NIH 1990, 8.80% according to Rotterdam 2003, 4.74% according to the AE-PCOS 2006, and 1.69% according to other criteria/self-report, with an overall pooled PCOS prevalence of 4.57%. All studies using NIH 1990, Rotterdam 2003, and AE-PCOS 2006 were of high quality, and those using other criteria/self-report were of low quality, thus subgroup analysis based on quality resulted in the same prevalences as above. When including only high-quality studies that used direct or mixed assessment, PCOS prevalence was highest in the Western Pacific Region (WPR) at 20.69% and lowest in the Eastern Mediterranean Region at 3.43% under Rotterdam 2003, while it was highest in the South-East Asia Region at 6.20% and lowest in the WPR at 3.94% under NIH 1990. Only one high-quality study using direct or mixed assessment was available under AE-PCOS 2006. Conclusion: This meta-analysis revealed that PCOS prevalence varies according to the PCOS criteria, assessment type, and WHO region. This variability should be addressed, ideally through unifying the diagnostic criteria and using meticulous methods in PCOS epidemiologic studies. The effect of study quality alone on PCOS prevalence could not be detected because of insufficient data, further reinforcing the need for undertaking PCOS prevalence studies in all populations and regions. Presentation: 6/2/2024

Impact of PRECEDE-PROCEED Model Audits in Cancer Screening Programs in Lombardy Region: Supporting Equity and Quality Improvement.

Health disparities related to socio-economic factors impact access to preventive health interventions. The PRECEDE-PROCEED model, a multidimensional approach to health promotion, has been adapted to optimise cancer screening programs in Lombardy, Italy, addressing these disparities. This study evaluated the application of systemic audits based on the PRECEDE-PROCEED model across Lombardy cancer screening programs. A systematic region-wide audit was performed in 2019, and follow-up audits were performed in 2022-2023. Data were collected using structured analysis methodologies, including epidemiological, behavioural, and organisational assessments. The 2019 audit showed strengths in participation and quality standards but identified challenges in cervical cancer screening coverage and waiting times for assessments. Improvements plans included the digitisation of processes and stakeholder engagement. The 2022-2023 audits reported increased coverage for breast and colorectal screenings, but a slight decline in participation rates and examination coverage. Organisational improvements were noted, yet gaps in training and equity-targeted actions remained. The PRECEDE-PROCEED model audits led to notable improvements in the quality and equity of cancer screening programs in Lombardy. Sustained focus on digital integration, continuous re-training, and targeted equity interventions is essential for further progress.

Sympathetic ophthalmia: epidemiology and cohort-based assessment of clinical outcomes

BackgroundThe purpose of this study was to report the incidence, time after inciting event, aetiology and risk after specific intraocular procedures and the visual outcomes associated with sympathetic ophthalmia (SO)...

Respiratory syncytial virus infection notification trends and interpretation of the reported case data, 2018-2021, Japan.

In Japan, as elsewhere, the COVID-19 pandemic affected the notification trends of respiratory syncytial virus (RSV) infection. Here, we describe the epidemiological trends of RSV cases among children reported during 2018-2021 in Japan, based on the national surveillance system. Compared to 2018 and 2019, 2020 saw an unprecedented decrease in RSV notifications per sentinel site. However, 2021 experienced an unseasonably early and high peak in week 28 (peak week in 2018 and 2019: week 37) with a large resurgence in notifications, nationwide and across regions. Regarding age, compared to 2018 and 2019, the number and proportion of cases aged 2, 3, and ≥4-years increased substantially in 2021 but the number of cases aged <1 year decreased slightly. Furthermore, in 2021, the ratio of notifications per site from outpatient clinics to hospitals increased, suggesting a proportionate increase in clinically milder case diagnoses. Notably, RSV-attributed deaths from vital statistics also dropped substantially in 2020 and rebounded in 2021, but were fewer than in 2018 or 2019. While RSV incidence likely declined in 2020 (possibly from COVID-19 countermeasures) and increased in 2021, notifications in 2021 appeared to be associated with milder presentations. Given unpredictable RSV epidemiology, continuous monitoring and pluralistic assessments are imperative.

Using an information and analytical system to assess the health status of the personnel of the Vostochny Space Center

The Vostochny Space Center is a new facility of the Russian space industry, which began launching space technology in 2016. In the normal operation of the cosmodrome, the impact of rocket fuel components on personnel, taking into account the data of sanitary and hygienic monitoring, is not expected, however, the influence of a chemical factor is possible in cases of emergency situations. The purpose of the study is a hygienic assessment of the impact of harmful and dangerous factors of the production environment on the health of the personnel of the Vostochny cosmodrome using an information and analytical system of sanitary and hygienic monitoring. The study was based on the classical methodological basis of a comprehensive sanitary and epidemiological assessment of the production environment. The analysis showed the absence of differences in the levels and dynamics of morbidity by the main classes of the disease, the absence of professionally determined pathology, which indicates the sufficiency of the complex of organizational, technical and sanitary measures implemented during the creation of the Vostochny Space Center. Thus, the introduction of information and analytical approaches to the organization and implementation of monitoring studies makes it possible to obtain the necessary comprehensive information, timely and fully record the impact of negative factors of the production environment on employees, and perform a comprehensive assessment of the health status of the personnel of the Vostochny cosmodrome.

Evolutive Study of Dietary Aspects and Intestinal Microbiota of Pediatric Cohort with Cow's Milk Protein Allergy.

One of the most common food allergies in the pediatric population is allergy to cow's milk protein (CMPA). Treatment consists of avoiding cow's milk proteins in lactating mothers and/or using therapeutic formulas based on hydrolysates or vegetable formulas. In infants with CMPA at diagnosis, a different gut microbial profile has been found compared to healthy children, with a reduction in beneficial bacteria. The aim of this study was to evaluate changes in the gut microbiota profile and its metabolites, dietary patterns and anthropometric variables in a pediatric cohort with CMPA after six months on a restrictive diet compared to healthy controls. In total, 21 patients diagnosed with CMPA and a control group of 24 healthy infants participated in this study. The fecal microbiota of all participants were investigated by metataxonomic analysis of 16S rDNA amplicons, and fecal short-chain fatty acids were measured by gas chromatography. Epidemiological assessment and dietary questionnaires were carried out for both groups. Regarding growth, no significant differences were found, but differences in dietary intake of some macro- and micronutrients were observed. Patients who were breastfed at six months had higher bifidobacteria and lipid intakes than patients fed with hydrolyzed formulas. Although the growth of CMPA infants fed with therapeutic formula is similar to breastfed CMPA infants, there are differences in microbiota composition and macronutrient intake that underline the importance of continued breastfeeding in CMPA cases.

Global epidemiology of liver cancer 2022: An emphasis on geographic disparities.

Liver cancer remains the sixth most commonly diagnosed cancer and the third leading cause of cancer-related deaths worldwide, causing a heavy burden globally. An updated assessment of the global epidemiology of the liver cancer burden that addresses geographical disparities is necessary to better understand and promote healthcare delivery. Data were extracted from the GLOBOCAN 2022 database, including the number, crude, and age-standardized rates of incidence and mortality at the global, country, continent, and human development index (HDI) regional levels. Age-standardized rates (incidence and mortality) per 100,000 person-years were adjusted based on the Segi-Doll World standard population. The mortality-to-incidence ratios (MIR) for each region and country were calculated. The HDI and gross national income (GNI) for 2022 were obtained, and a Pearson correlation analysis was conducted with the incidence, mortality, and MIR. In 2022, approximately 866,136 new liver cancer cases and 758,725 related deaths were recorded worldwide, with a global MIR of 0.86. Males had a disproportionately higher burden than females across all levels, and the highest burden was observed in the elderly population. Geographically, the regions with the highest incidence rates included Micronesia, Eastern Asia, and Northern Africa, and the regions with the highest mortality rates included Northern Africa, Southeastern Asia, Eastern Asia, and Micronesia. Notably, Mongolia had a strikingly high burden compared to other countries. The highest MIR was observed in North America and the lowest in Africa. Negative associations of HDI and GNI with liver cancer mortality and MIR were identified, irrespective of sex. The current liver cancer burden underscores the presence of remarkable geographic heterogeneity, which is particularly evident across countries with varying HDI levels, highlighting the urgent need to prioritize health accessibility and availability to achieve health inequities.

Surveillance Metrics and History of the COVID-19 Pandemic in Central Asia: Updated Epidemiological Assessment.

This study updates the COVID-19 pandemic surveillance in Central Asia we conducted during the first year of the pandemic by providing 2 additional years of data for the region. The historical context provided through additional data can inform regional preparedness and early responses to infectious outbreaks of either the SARS-CoV-2 virus or future pathogens in Central Asia. First, we aim to measure whether there was an expansion or contraction in the pandemic in Central Asia when the World Health Organization (WHO) declared the end of the public health emergency for the COVID-19 pandemic on May 5, 2023. Second, we use dynamic and genomic surveillance methods to describe the history of the pandemic in the region and situate the window of the WHO declaration within the broader history. Third, we aim to provide historical context for the course of the pandemic in Central Asia. Traditional surveillance metrics, including counts and rates of COVID-19 transmissions and deaths, and enhanced surveillance indicators, including speed, acceleration, jerk, and persistence, were used to measure shifts in the pandemic. To identify the appearance and duration of variants of concern, we used data on sequenced SARS-CoV-2 variants from the Global Initiative on Sharing All Influenza Data (GISAID). We used Nextclade nomenclature to collect clade designations from sequences and Pangolin nomenclature for lineage designations of SARS-CoV-2. Finally, we conducted a 1-sided t test to determine whether regional speed was greater than an outbreak threshold of 10. We ran the test iteratively with 6 months of data across the sample period. Speed for the region had remained below the outbreak threshold for 7 months by the time of the WHO declaration. Acceleration and jerk were also low and stable. Although the 1- and 7-day persistence coefficients remained statistically significant, the coefficients were relatively small in magnitude (0.125 and 0.347, respectively). Furthermore, the shift parameters for either of the 2 most recent weeks around May 5, 2023, were both significant and negative, meaning the clustering effect of new COVID-19 cases became even smaller in the 2 weeks around the WHO declaration. From December 2021 onward, Omicron was the predominant variant of concern in sequenced viral samples. The rolling t test of speed equal to 10 became entirely insignificant for the first time in March 2023. Although COVID-19 continues to circulate in Central Asia, the rate of transmission remained well below the threshold of an outbreak for 7 months ahead of the WHO declaration. COVID-19 appeared to be endemic in the region and no longer reached the threshold of a pandemic. Both standard and enhanced surveillance metrics suggest the pandemic had ended by the time of the WHO declaration.

Epidemiologic Assessment of Scabies: Actuality of Airborne Transmission and Additional Standards to Reduce Spread of Contagion and Reinfestation

Scabies are caused by parasites that live their entire life within the outer layers of the epidermis. When dislodged either by gravity, friction, motion, wind, or static electricity, they assume great risks to survival. Innate abilities to sense human smell and heat, to move over short distances, and to penetrate the skin quickly allow them a fighting chance to find a new host if they land within 4 inches of a human. Females store sperm, allowing one mite to begin a colony. Transmission is by person-to-person, fomite, and airborne. They are aerodynamic, light, and balloon-shaped, all making airborne transmission easier than previously understood, as well as explaining the dissemination of mites beyond the normal zones of activity of the index case. Presently, the bulk of the medical literature suggests that transmission from inanimate objects poses little concern in common scabies. However, as mites can navigate through cloth gowns, one might consider protection with more protective garb. Mites cannot penetrate through waterproof clothing, and thus, this attire should be recommended to avoid reinfestation and infesting others. Sofas, chairs, office furniture, and car seats on which an index case might sit need to be covered with plastic sheeting. Given that the half-life of ivermectin is 18 hours and that mites dehydrate within 96 hours, strict transmission controls are only needed for 3 days to avoid reinfestation as well as infesting others. Key Points Scabies is an intensely itchy skin rash caused by a burrowing mite that infects the outer layers of the skin. Scabies is contagious and usually spread by direct, prolonged skin-to-skin contact with an infected person; however, fomite and airborne transmission are also operative. Precautions should be in place to avoid direct skin-to-skin contact between a patient with scabies and visitors. Water-proof clothing would be advisable, especially in cases involving Norwegian scabies. Success rates with oral ivermectin would more closely approach 100% if all transmission factors, including fomite and airborne, were addressed.

Snakebite incidence and healthcare-seeking behaviors in Eastern Province, Rwanda: A cross-sectional study.

Snakebite envenoming (SBE) is a potentially life-threatening event that can lead to severe physical, mental, and economic hardships, particularly in under-resourced regions like sub-Saharan Africa. In Rwanda, there have been no epidemiological assessments of SBE to guide the Ministry of Health in its efforts to reduce the burden. This study had two main objectives: first, to estimate the incidence of snakebites across districts, and second, to describe formal versus informal healthcare seeking behaviors among snakebite victims in Eastern Province, Rwanda in 2020. This cross-sectional study utilized a cluster sampling approach, involving Community Health Workers (CHWs) who recorded snakebite cases across seven districts. The descriptive analysis considered sampling weights, and healthcare seeking behavior was assessed based on the type of care sought as the first point of treatment. The study surveyed 390,546 individuals across 763 villages and estimated a provincial annual incidence rate of 4.3 cases per 1,000 individuals. Incidence estimates ranged from 1.1 cases per 1,000 in Nyagatare to 9.1 cases per 1,000 individuals in Bugesera and Ngoma districts. Among the 2,545 cases recorded by CHWs, three resulted in deaths. Regarding healthcare-seeking behavior, 13% of snakebite victims (143 out of 1,098) initially consulted formal care providers (CHWs, health post/center, or hospital), while 87% sought informal care (family/friends, pharmacist, or traditional healer). Approximately half of the victims (583, 53.1%) reported severe symptoms. Unsafe practices included skin cutting/burning, tourniquet application, use of black stones, and venom extraction; only 24 cases (2.2%) received anti-venom. This large-scale community-based assessment highlights variations in snakebite incidence between districts and confirms frequent involvement of traditional healers in management. Improving access to anti-venom and community education on the risks of ineffective practices, along with timely use of formal healthcare, are crucial. Collaboration between healthcare providers, traditional healers, community leaders, and policymakers is essential to implement targeted interventions for enhancing snakebite prevention and management strategies.

Epidemiology and Human Health Risk Assessment in the IRIS Program

Epidemiology and Human Health Risk Assessment in the IRIS Program

An Epidemiological Assessment of SARS-CoV-2 in the Sewage System of a Higher Education Institution.

Background: The World Health Organization declared the end of the COVID-19 pandemic in May 2023, three years after the adoption of global emergency measures. Monitoring of SARS-CoV-2 in sewage underscores its importance due to its effectiveness and cost-effectiveness, highlighting the need to prioritize research on water resources and sanitation. Objectives: The aim of this study was to conduct an epidemiological assessment of SARS-CoV-2 in the sewage system of a higher education institution located in Vitória Espírito Santo State, Maruípe campus. Methods: Over a period of 66 days, from February 6 to April 12, 2023, 15 samples were collected. Each sample consisted of 1 L, collected in 1 hour, with 250 mL collected every 15 minutes. The samples were characterized by assessing their appearance, and pH was measured using a Horiba U-50 multiparameter probe. The extracted RNA was subjected to RT-qPCR using the Allplex™ 2019-nCovAssay Seegene kit. Results: The samples exhibited a cloudy appearance with impurities, and the pH ranged from 6.35 to 8.17. Among the evaluated samples, SARS-CoV-2 RNA was detected in two, and, by comparing this with the epidemiological bulletin issued by the State Health Department, an increase in cases in the state was observed during the collection period of these samples. Conclusions: Sewage monitoring proved to be an important tool in this post-pandemic period, serving as an alert and prevention mechanism for the population in relation to new outbreaks. Furthermore, it represents a low-cost mapping strategy and extensive testing of a population, aligning with the studies presented at the beginning of the pandemic. We recommend specific adjustments considering distinct populations.

Epidemiological Assessment of Animal Bite Injury and Rabies Post Exposure Prophylaxis in Kisumu County, Kenya

Epidemiological Assessment of Animal Bite Injury and Rabies Post Exposure Prophylaxis in Kisumu County, Kenya

Impact of COVID-19 on temporal trends and health risks of urinary metal concentrations among residents of Guangzhou, China

Long-term biomonitoring of urinary metal ions is an essential tool for the epidemiological assessment of chronic exposure levels, enabling us to track changes in metal exposure over time and better understand its health implications. In this study, we evaluated the temporal trends of urinary metal ions among 1962 residents of Guangzhou, China, from 2018 to 2022. The total metal ion concentrations in the urine of the population did not change significantly between 2018 and 2019. With the onset of the COVID-19 pandemic in 2020, urinary total metal ion concentrations began to decline dramatically, reaching their lowest level in 2021. A rebound in concentrations was observed in 2022, which returned to the initial levels observed in 2018. Urine chromium and cadmium concentrations peaked in 2020, while urinary lead levels were the highest in 2021, and urinary nickel concentrations were the highest in 2022. Males consistently displayed higher urinary concentrations of lead and arsenic throughout each year of the study. Furthermore, minors consistently had higher urinary nickel levels than adults, whereas adults consistently had higher urinary cadmium concentrations than minors. Cluster analyses were conducted annually on urinary metal ions to examine the differences in their distribution and to evaluate changes in metal exposure patterns over time. The Monte Carlo simulations indicate that the whole population exhibits a high non-carcinogenic risk from arsenic exposure and significant carcinogenic risks associated with exposure to nickel, arsenic, chromium, and cadmium. The next two years were predicted by a gray prediction model, and the results are tested using mean absolute percentage error which demonstrating high accuracy.

Layer based epidemiological quality assessment of architecture of care security and geriatric wards

The article describes the potential use of an original model called the layered epidemiological assessment (warstwowa ocena epidemiologiczna - WOE) for assessing the potential risk of infections in facilities intended for elderly individuals. To verify the possibility of using the WOE method for assessing epidemiological safety hazards in the built environment, available literature sources related to the legal requirements in Poland regarding the assessment of medical facility ergonomics in terms of infection transmission were analyzed. The article also referred to the guidelines of the New European Bauhaus and the Baukultur Quality System as a standardized method for assessing the quality of the built environment. The article presents the fundamental assumption of the author's WOE method, which allows for the assessment of the risk of infection transmission separately for each component of a building. The effectiveness of the method was demonstrated by using it to assess the risk of infections in a geriatric ward room as an example. The article demonstrates that by employing the WOE, it is possible to clearly differentiate potential infection routes within the analyzed facilities and assign them to specific building components. Furthermore, by applying the presented method, it is possible to define necessary procedures and develop action plans to minimize the risk of infection spread within the analyzed properties. The application of the WOE for evaluating architectural solutions in facilities intended for the elderly offers several benefits. The WOE method presented in the article can serve as an expert tool for quick and precise assessment of potential epidemiological hazards. An important advantage of the WOE method is its ability to be used separately for different types of epidemiological hazards characterized by different routes of infection transmission. Med Pr Work Health Saf. 2024;75(3):199-209.

Meningitis and encephalitis in Poland in 2022.

Monitoring of meningitis and/or encephalitis regardless of etiology is part of routine epidemiological surveillance in Poland. In this study, we discuss in detail meningitis and/or encephalitis in 2022 caused by Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae, and tick-borne encephalitis virus. The aim of this study was an epidemiological assessment of the occurrence of meningoencephalitis and encephalitis in Poland in 2022, taking into account the analysis of the impact of the COVID-19 pandemic. To analyze the epidemiological situation of neuroinfections in Poland, we used data sent to NIPH NIH-NRI by the Sanitary and Epidemiological Stations and published in the annual bulletins: "Infectious Diseases and Poisons in Poland in 2022" and "Vaccinations in Poland in 2022" as well as individual epidemiological interviews registered in the EpiBase system. In 2022, a total of 1747 cases of meningitis and/or encephalitis were registered in Poland. This was a 79.4% increase in the number of cases compared to 2021, when 974 cases were recorded. For infections of bacterial etiology, including cases of neuroborreliosis, the number of cases increased by 62.3% . The incidence of meningitis and/or encephalitis of N. meningitidis etiology meningitidis increased by 30.8%, with etiology of H. influenzae compared to 2021 increased by 300%, and for S. pneumoniae by 71.9%. Infections of viral etiology accounted for 52% of all registered cases. There was an increase in their number by 99.1% compared to 2021. Among viral infections, tick-borne encephalitis was the most numerous group, with 466 cases compared to 210 in 2021. The year 2022 showed an overall upward trend in the number of registered cases of bacterial and viral meningitis and/or encephalitis compared to 2021. Still, the observed number of cases of meningitis and/or encephalitis of both bacterial and viral origin remains below the levels observed in the period before the COVID-19 pandemic.