Blood-borne Research Articles

Materials approaches for next-generation encapsulated cell therapies

AbstractTransplanted cells can act as living drug factories capable of secreting therapeutic proteins in vivo, with applications in the treatment of Type 1 diabetes (T1D), blood borne disease, vision disorders, and degenerative neural disease, potentially representing functional cures for chronic conditions. However, attack from the host immune system represents a major challenge, requiring chronic immunosuppression to enable long-lived cell transplantation in vivo. Encapsulating cells in engineered biomaterials capable of excluding components of the host immune system while allowing for the transport of therapeutic proteins, oxygen, nutrients, metabolites, and waste products represents a potential solution. However, the foreign-body response can lead to isolation from native vasculature and hypoxia leading to cell death. In this prospective article, we highlight materials-based solutions to three important challenges in the field: (i) improving biocompatibility and reducing fibrosis; (ii) enhancing transport of secreted protein drugs and key nutrients and oxygen via engineered, semipermeable membranes; and (iii) improving oxygenation. These efforts draw on several disciplines in materials’ research, including polymer science, surfaces, membranes, biomaterials’ microfabrication, and flexible electronics. If successful, these efforts could lead to new therapies for chronic disease and are a rich space for both fundamental materials’ discovery and applied translational science. Graphical Abstract

Drug use patterns and health problems among people who use drugs in Guinea-Bissau (2022): A cross-sectional survey using respondent-driven sampling

BackgroundLittle data exists on the use of cocaine, methamphetamine, tramadol and heroin or related health conditions in Guinea Bissau. We aimed to estimate drug use practices and the prevalence of selected blood-borne infections, depression and population size estimates of people who use injectable drugs in Guinea-Bissau. MethodsWe used respondent-driven sampling to recruit adults who use injectable drugs in this cross sectional survey in three cities (Bissau, Bafatá and Gabú) between July and September 2022. Participants completed an interviewer administered survey enquiring about sociodemographic characteristics, drug use practices and mental health. Rapid diagnostic testing was done for HIV, hepatitis B surface antigen (HBsAg) and hepatitis C antibody (anti-HCV). Data was weighted in RDS-Analyst using self-reported network size and Gile's Sequential Sampling Estimator. Population size estimates were generated using the two point capture-recapture method. ResultsOverall, 750 participants were recruited. People who use drugs were estimated to be mostly unemployed males aged between 25 and 49 years. Methamphetamine and crack cocaine were most commonly used. Prevalence of ever injecting ranged from 6 % to 44 %. Between 44 % and 52 % of people experience symptoms of depression. Prevalence ranges from 1.9 % to 5.2 % for HIV, and 5.7–8.3 % for HBsAg and 0.42–0.66 % for anti-HCV. The population estimates of people who use injectable drugs were 1637 in Bissau, 1314 in Bafatá and 424 in Gabú. ConclusionMethamphetamine and crack cocaine are the most commonly used injectable drugs in Guinea-Bissau. Symptoms of depression are common among people who use drugs in the country. Access to evidence-based drug use treatment and harm reduction interventions that integrate mental health care services are needed to improve the health and wellbeing of people who use drugs in Guinea-Bissau.

La transfusion sanguine chez le chien en Tunisie, enquête auprès des vétérinaires libres-praticiens

In Tunisia, blood transfusion in dogs is practiced without any legal framework protecting the veterinary practitioner or guaranteeing the conditions for good transfusion practice. Given that the current situation of transfusion practice is unknown in Tunisia, we opted for a descriptive multicenter evaluation survey with a single cross-sectional data collection. An anonymous questionnaire was designed with Google forms and sent to 200 veterinary practitioners by e-mail between June and July 2023. Approximately one third (29.5%) of veterinarians agreed to take part in the study and completed the questionnaire. Among them, 35.6% of veterinarians had already transfused a sick dog at least once. There were inconsistencies between current practices and the rules of good practice, none of veterinarians practicing transfusion perform screening of blood-borne infections, none perform blood grouping and crossmatching. Efforts are requested to promote and organize blood transfusion in dogs in Tunisia.

NEEDLE STICK INJURIES AMONG NURSES IN LAHORE

Needle stick injuries (NSIs) are a significant occupational hazard for healthcare workers, particularly nurses, as they increase the risk of transmitting bloodborne pathogens such as hepatitis B (HBV), hepatitis C (HCV), and HIV. Objective: This study aimed to assess the prevalence, risk factors, and contributing practices associated with NSIs among nurses at Lahore General Hospital, Pakistan. Methods: A cross-sectional quantitative study was conducted from June to September 2024. A structured, pre-tested questionnaire was used to collect data from 257 nurses selected through non-probability consecutive sampling. Data were analyzed using SPSS version 20, employing descriptive and logistic regression analyses to identify associated factors. Results: The annual prevalence of NSIs among participants was 37.4%, with 12.1% reporting an NSI in the past month. Younger nurses (<30 years) and those with less than five years of experience were at higher risk. High-risk departments, such as ICU/OR (48.2%) and maternal units (44.4%), reported the highest incidence of NSIs. Unsafe practices, including needle recapping (73.2%) and inadequate infection control training (60.3%), were significant contributors. Nurses who received infection control training had a lower prevalence of NSIs (28.8%) compared to untrained staff (43.4%). Conclusion: The study highlights the urgent need for enhanced infection control training, implementation of universal safety protocols, and the use of safety-engineered devices to reduce NSI prevalence among nurses in Pakistan. Targeted interventions in high-risk departments and systemic improvements in workplace safety are critical to mitigating occupational risks for healthcare workers.

QBox: An Automated Portable System for Multiplex Quantum Dot Barcode Diagnostics.

The COVID-19 pandemic accelerated the development of automated systems for detecting molecular targets for the point-of-care. However, these systems have limited multiplexing capabilities because of the need to alter their hardware to accommodate additional targets and probes. Quantum dot barcodes address this multiplexing obstacle, but their assays have multiple steps that rely on extensive training and laboratory equipment. Here, we built a portable cartridge-and-instrument system that automates the extraction, reverse transcription, amplification, and detection steps of a quantum dot barcode assay. This entire workflow can be completed in 40 minutes. We clinically validated the system with SARS-CoV-2 patient samples (n = 50, 92% sensitivity, 100% specificity). We then demonstrated multiplexing with 4-barcode respiratory and 5-barcode bloodborne pathogen panels. Our portable system opens quantum dot barcodes for broad use in rapid multiplexed detection of infectious pathogens with the potential for detecting cancer and other genetic diseases.

Infections acquired in barbershops - A review.

Barbershops are important venues for men to get their hair and beards done and hence, play an important role in men's social life. But barbershops can also be a source of infections. The barber's profession brings the barber into direct contact with customers who may carry pathogens, and contaminated instruments or skin-to-skin contacts might transmit infectious agents. Since barbers work with non-sterile and reusable sharp objects, a simple nick might facilitate blood-borne infections. In our review article we summarize current knowledge regarding barbershop-acquired infections including transmission routes and preventive measures. In fact, shaving in barbershops, particularly when reusing non-disinfected razor blades increases the transmission risk for the human immunodeficiency virus (HIV) and hepatitis B or C viruses. Furthermore, distinct bacteria like Staphylococcus aureus, fungi (in particular dermatophytic Trichophyton species) as well as ectoparasitic lice could be identified upon screening of the barbers' equipment and working places. However, knowledge regarding and compliance in hygiene practices varied considerably among barbers. Notably, since in certain countries barbershops are venues to contact sex workers, sexually transmitted diseases might also be acquired in barbershops. In conclusion, improving hygiene standards including disinfection of reusable equipment, and surveillance of the preventive measures would reduce the risk for barbershop-acquired infections.

Patterns, circumstances and risk factors associated with non-fatal substance overdose in a cohort of homeless population: an observational study.

Non-fatal overdoses frequently precede fatal overdoses, thus identifying risk factors for non-fatal overdoses could help develop strategies to prevent substance related deaths. This study aimed to identify patterns, circumstances and risk factors leading to non-fatal substanceoverdose in people experiencing homelessness. All recorded cases of non-fatalsubstanceoverdose from a population of people experiencing homelessness registered at a specialist homelessnessprimary care centre in England were identified using electronic medical records. Overdose details and patient characteristics were extracted. The heterogeneity between variables in people with and without a recorded non-fatal overdose were tested and multivariable logistic regressions wereused to identify the risk factors of non-fatal overdoses. From the 1221 registered patients, 194(16%) were identified as having had a non-fatal overdose with 428 overdoses between them. Half were polypharmacy events with the main substances of overdose being: heroin,paracetamol, benzodiazepines, cocaine, antipsychotics, SSRIs and synthetic cannabinoids. Risk of non-fatal overdose was greater in females, white ethnicity, ages 36-45, and in those with a recorded use of tobacco, alcohol or illicit substance use. Chronic physical and mental health conditions increased the risk of non-fatal overdose including respiratory conditions, blood borne viruses, migraines, anxiety and depression. With a high number of non-fatal overdoses within this population, identifying individuals at risk based on the factors identified in this researchcould enable primary care providers to apply prevention actions such as overdose awareness and naloxone provisionto avoid drug harm and deaths. Future work should explore the role of chronic physical conditions and their treatment on non-fatal overdose risks.

Implementation of a paraprofessional role across the public health sector in Manitoba: Impacts on system capacity.

Manitoba experiences sexually transmitted and blood-borne infection (STBBI) incidence rates above the national average and fundamental public health sector responses face human resource constraints. Manitoba implemented a paraprofessional role, the Communicable Disease Technician (CD Tech), to complete low-complexity STBBI investigations and support STBBI testing, care engagement initiatives, provider reporting, harm reduction supply distribution, and community engagement. Secondary roles included tuberculosis directly observed treatment (DOT) and virtual DOT, and flu and COVID immunization support. Twenty CD Tech positions were allocated to regional public health teams along with additional Public Health Nurse (PHN) positions to support the role. Mixed methods were used to evaluate the impact on public health system capacity. Follow-up of chlamydia and gonorrhea case investigations increased from 35% to 98%. Volume of contacts followed by public health increased for chlamydia (114%), gonorrhea (33%), and HIV (68%). Health care provider reporting for cases of STBBI and treatment more than doubled (116%). No significant differences in case investigation data quality were found between CD Techs and PHNs. Qualitative interviews by public health staff (n = 24) found CD Techs highly flexible and competent team members who can fill gaps and expand capacity in direct client service, outreach, administration, data entry, or community/partner engagement. Mentorship, ongoing supervision, role clarity, training, and clear practice standards are required to optimize the role. There is potential to expand this innovation and build surge capacity in other areas of public health practice, and other public health jurisdictions.

Identifying barriers to hepatitis B and delta screening, prevention, and linkage to care among people who use drugs in Philadelphia, Pennsylvania, USA

BackgroundPeople who use drugs (PWUD) are at increased risk for blood-borne viruses, including hepatitis B (HBV) and delta (HDV). Despite the public health threats both viruses present, awareness remains low among at-risk communities and providers who serve them. This study assessed barriers to HBV and HDV prevention, diagnosis, and linkage to care, evaluated existing levels of knowledge, and identified educational needs and preferences among both PWUD and service providers.MethodsFor this mixed-methods study, data were collected through an anonymous online provider-focused survey, and interviews with PWUD, non-medical staff, and healthcare providers at a harm reduction organization in Philadelphia, PA, USA. Convenience sampling was used for recruitment of both key informants and survey respondents. Survey respondents were categorized according to their type of practice. For the interviews, a codebook was created for qualitative analysis. Data were subsequently organized into thematic categories.ResultsThe top provider-related barriers limiting HBV screening were identified as confusion about insurance coverage (48%) and competing priorities (45%). Barriers to vaccination included patient hesitancy (52%) and challenges with administering multiple doses (39%). Respondents indicated low knowledge of HDV tests (62%) and cited guideline complexity (31%) as barriers to HDV testing. HBV and HDV awareness within the community and among staff was poor. Findings demonstrated that stigma related to drug use and harm reduction posed a significant barrier to care. Participants recommended awareness campaigns tailored for the PWUD community that are non-stigmatizing and non-judgmental, clear, factual, digestible, and interactive, with empowering steps to protect health.ConclusionThis study identified major gaps in HBV and HDV service delivery for PWUD, including poor basic knowledge, the need to address this through culturally appropriate, non-stigmatizing and tailored educational programming, and challenges with access to vaccination and testing. Continued initiatives are needed to close disparities, and to continue to provide financial and political support for harm reduction organizations, a frequently cited facilitator of healthcare access for PWUD. Significant efforts are essential to address lack of vaccination, testing, and linkage to care, and to improve health outcomes among PWUD.

Detected substance abuse among injecting drug users through analysis of used syringes in Tunisia

Background and aimsInjecting drug use poses significant public health risks due to unsafe practices such as syringe sharing, reuse, and risky sexual behaviors, which increase the transmission of bloodborne viruses. In Tunisia, limited data on injecting drug use hinders the development of informed health and harm reduction policies. MethodsA syringe collection campaign was conducted in Tunis in November 2022. The used syringes were provided by the Tunisian Association for Information and Orientation on AIDS and Addiction (ATIOST), a harm-reduction service. These syringes had been distributed to people who inject drugs (PWID) as part of a mobile syringe exchange program. The objective of the study was to analyze the contents of the used syringes to gain further insights into drug use patterns among PWID. The residual substances in the syringes were examined using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), in accordance with the standardized protocol of the European Syringe Collection and Analysis Project Enterprise (ESCAPE). ResultsA total of 261 syringes from five collection sites were analyzed. Among these, 87 % contained at least one psychoactive substance, while 32 % contained more than two psychoactive substances. The most frequently identified psychoactive substances were buprenorphine (50.28 %), amphetamine (11.65 %) and tramadol (9.66 %). No substances were detected in 34 syringes. ConclusionThis method provides rapid data on drug use trends in specific regions and timeframes, revealing differences that can inform tailored prevention and harm reduction strategies. Such analyses are valuable for comparative studies across countries in the European Neighbourhood Policy (ENP-South) region.

Clinical staff attitudes towards opt-out consent for blood-borne virus screening in emergency departments in England.

Opt-out screening for blood-borne viruses (BBVs) in emergency departments (EDs) has been established in areas with a high prevalence of HIV diagnoses in England. This multi-site study explored the attitudes of healthcare workers (HCWs) towards BBV screening in EDs post-implementation. This was a cross-sectional electronic survey of HCWs. Between November 2023 and February 2024, HCWs across 33 EDs in England participating in opt-out BBV screening were invited to complete a survey about the feasibility and acceptability of screening, including the opt-out consent process. Factors independently associated with acceptability of opt-out screening were identified using multivariable logistic regression. Free-text responses were analysed thematically. Responses from 610 HCWs in 19 EDs were provided: 50.4% were nurses, 43.1% doctors, and 6.5% other healthcare professionals. Acceptability of the screening programme and opt-out consent was high (90.3% and 77.7%, respectively), with some variation between EDs. Acceptability of opt-out consent was greater among doctors than among other HCWs, and among HCWs who proactively discussed screening further with patients who opted out. However, 50.8% of HCWs felt that patients should be verbally reminded at blood draw, and 44.3% of HCWs wanted more training in discussing opt-out screening with patients. Free-text answers suggested changes to test-ordering systems, including simple integration of tick boxes to document whether patients opted out and to block repeated testing. There was substantial support from ED HCWs for routine opt-out ED BBV screening, including opt-out consent. Key areas suggested for improvement included changes to test-ordering systems and additional training for HCWs. Frequent preference for verbal reminders at the point of blood draw suggests continued HIV testing exceptionalism.

Study on needle stick injuries during surgery and blunt needle use for reducing occupational exposure and hygiene benefits.

The conventional round suture needle poses a significant risk of needle stick injuries among surgical physicians, identified as a global occupational hazard by the World Health Organization, increasing hospital costs and exposure to bloodborne pathogens. While novel blunt suture needles have shown promise in reducing these risks, their adoption is limited domestically, prompting a study to compare their efficacy against traditional sharp needles in reducing needle stick injuries among surgical physicians. To investigate suture needle stick injuries among surgical doctors during operations and assess the application effectiveness of a novel blunt suture needle. A total of 106 surgical department physicians from March 2021 to February 2023 participated in the study. After completing a questionnaire survey on suture needle injuries during surgery, the participants were divided into two groups. Over a 6-month intervention period, the control group used regular round needles while the study group utilized novel blunt suture needles. Subsequently, suture needle injury incidence rates and economic hygiene benefits were compared between the two groups. The suture needle injury questionnaire survey showed that over the past 6 months, among 106 surgical department physicians, 20 needle stick injuries occurred, yielding an incidence rate of 18.87%. The highest incidence (65.00%) was during suturing incisions longer than 10 cm, primarily when visibility was poor (70.00%). Surgeons linked most injuries (60.00%) to prolonged surgical duration causing fatigue. Although 85.00% detected injuries within 1 minute, only 40.00% were reported, often due to perceived reporting complexity. Following intervention, the study group had significantly fewer injuries per surgery and lower occupational exposure costs compared to the control group (p< 0.05). Surgical department physicians commonly sustain suture needle injuries while suturing incisions of 5-10 cm length under poor visibility, exacerbated by prolonged surgical duration. Despite detecting most injuries within 1 minute, only 40% are reported. The implementation of novel blunt suture needles significantly decreases injury rates, resulting in reduced occupational exposure costs and favorable safety and economic hygiene outcomes.

Characterization of the Blood Bacterial Microbiota in Lowland Tapirs (Tapirus terrestris), a Vulnerable Species in Brazil.

Microbiome studies targeting hypervariable regions of the 16S rRNA gene are suitable for understanding interactions between animals and their associated bacteria. While many studies focus on the gut microbiome, assessments of blood microbiota remain scarce despite the prevalence of blood-borne pathogens in vertebrates. This study aimed to investigate the bacterial community in blood samples from 79 living and 7 road-killed lowland tapirs (Tapirus terrestris), a vulnerable species, sampled in two biomes in midwestern Brazil: Pantanal and Cerrado. Animals were categorized by condition (living or road-killed), sex, age, and biome. V3-V4 16S rRNA fragments were obtained from 86 blood samples and 4 negative controls. After filtering contaminants, 13,742,198 sequences representing 2146 ASVs were analyzed. Alpha diversity significantly differed by condition, while beta diversity differed by condition, site, and age (adults vs. sub-adults). For living animals (79/86 samples), alpha diversity showed no significant differences, but beta diversity differed by age. Different vector-borne bacterial pathogens, including Anaplasmataceae, Bartonella, and Borrelia spp., were detected. Additionally, evidence of transient translocation of microbial communities from other body regions to the bloodstream was observed. Amplification of bacterial 16S rRNA from blood samples of wild T. terrestris provided novel information about the diversity of blood-borne microbiota of lowland tapirs, members of a poorly studied mammalian family. Next-generation sequencing proved to be a valuable tool for screening potential vector-borne pathogens in this host.

Immune Response in Cattle Trypanosomosis and Trypanotolerance: Main Findings and Gaps.

Trypanosome parasites of the genus Trypanosoma cause African animal trypanosomosis, a devastating livestock disease plaguing sub-Saharan Africa. Unlike many protozoan parasites, these extracellular blood-borne pathogens directly engage the host's immune system. While the mouse model has provided valuable insights, a comprehensive understanding of the bovine immune response to trypanosomes remains elusive. Addressing the immune response in cattle, the most relevant host species, and how it takes part in mitigating the negative impact of the disease could contribute to setting up sustainable control strategies. This review summarises the current knowledge of the immune response in cattle during trypanosomosis. Following a brief overview of infection processes and bovine trypanotolerance, we present advances in the regulation of host innate, inflammatory and adaptive responses and delve into the key immunological players involved in immunoactivities and immunosuppression. We discuss how these mechanisms contribute to tolerance or susceptibility to infection, highlighting critical gaps in knowledge that require further investigation.

Occurrence of multiple infections of rodents with parasites and bacteria in the Sibang Arboretum, Libreville, Gabon

Background and Aim: Rodents are carriers or reservoirs of various bacteria, protozoa, viruses, and ectoparasites. Given the proximity of various rodent species and humans, there is a potential for the transmission of pathogens. Data on ecto- and endo-parasite prevalence in rodent populations in Gabon are limited. To fill this gap, we conducted a study in Libreville to investigate the occurrence of ecto- and endo-parasites in rodents. Materials and Methods: We captured and euthanized 68 rodents belonging to the genus Praomys and examined their ecto- and endo-parasite fauna, dissected their gastrointestinal tract for helminths, and prepared blood smears to examine blood-borne pathogens. Results: Our analyses identified three pathogen taxa: helminths (Protospirura spp., Trichuris spp., and Taenia spp.), protozoa (Babesia spp.), bacteria (Anaplasma spp.), and arthropods (Laelaps and Haemaphysalis). Overall, 91.2% of the rodents were infected with at least one pathogen and ectoparasite, with helminth and ectoparasite occurrence rate of 63.2% and ectoparasite occurrence at 44.1%. Protozoan infections (Babesia spp.) were found in 10.3% of the rodents, whereas bacteria (Anaplasma spp.) had an occurrence rate of 39.7%. Conclusion: Native rodents in Libreville harbor various infectious agents, ecto- and endo-parasites. These findings highlight the potential health risks associated with Praomys rodents for the transmission of various diseases to human population in Gabon and emphasize the need for investigation of rodents for their role as disease carriers. Keywords: Anaplasma, Babesia, Gabon, Haemaphysalis, Helminths, Laelaps, Praomys.

Imaging and clinical manifestations of hematogenous dissemination in melioidosis

BackgroundAlthough there is a high incidence of hematogenous infections in melioidosis, a tropical infectious disease, there are few systematic analyses of hematogenous melioidosis in imaging articles. A comprehensive clinical and imaging evaluation of hematogenous melioidosis be conducted in order to achieve early diagnosis of the disease.Materials and methodsWe conducted an analysis of 111 cases of melioidosis diagnosed by bacteriological culture between August 2001 and September 2022. The analysis focused on observing the main manifestations of chest imaging and clinical data, including nodules, cavities, consolidation, ground glass opacity(GGO), pleural effusion, centrilobular nodules, and temperature, leucocyte count, diabetes, etc. Our study involved univariate and multivariate analyses to identify significant diagnostic variables and risk predictive factors.ResultsA total of 71.2% (79/111) of melioidosis cases were caused by hematogenous infection, and the most common organ involved was the lungs (88.5%, 100/113). The incidence of sepsis in patients with lung abnormalities was high (73%, 73/100), and the mortality rate of septic shock was 22% (22/100). Univariate analysis showed that the radiologic signs of blood culture-positive cases were more likely to have bilateral pulmonary and subpleural nodules (p = 0.003), bilateral GGO (p = 0.001), bilateral hydrothorax (p = 0.011). The multivariate analysis revealed a significant improvement in the area under the receiver operating characteristic curve (AUC) when comparing the model that included both clinical and radiologic variables to the model with clinical variables alone. The AUC increased from 0.818 to 0.932 (p = 0.012). The most important variables in the logistic regression with backward elimination were found to be nodule, GGO, and diabetes.ConclusionThe combination of CT features and clinical variables provided a valuable and timely warning for blood borne infectious melioidosis.

Point-of-care test of blood Plasmodium RNA within a Pasteur pipette using a novel isothermal amplification without nucleic acid purification

BackgroundResource-limited regions face a greater burden of infectious diseases due to limited access to molecular tests, complicating timely diagnosis and management. Current molecular point-of-care tests (POCTs) either come with high costs or lack adequate sensitivity and specificity. To facilitate better prevention and control of infectious diseases in underserved areas, we seek to address the need for molecular POCTs that better align with the World Health Organization (WHO)’s ASSURED criteria—Affordable, Sensitive, Specific, User-friendly, Rapid and robust, Equipment-free, and Deliverable to end users.MethodsA novel molecular POCT, Pasteur Pipette-assisted isothermal probe amplification (pp-IPA), was developed for malaria detection. Without any microfluidics, this method captures Plasmodium 18S rRNA in a modified Pasteur pipette using tailed genus-specific probes. After washing, the bound tailed probes are ligated to form a template for subsequent novel isothermal probe amplification using a pair of generic primers, bypassing nucleic acid extraction and reverse transcription. The method was assessed using cultured Plasmodium and compared with real-time quantitative reverse transcription PCR (RT-qPCR) or reverse transcription loop-mediated isothermal amplification (RT-LAMP) in clinical blood samples.ResultsThe entire assay is completed in 60–80 min with minimal hands-on time, using only a Pasteur pipette and a water bath. The pp-IPA’s analytical sensitivity is 1.28 × 10–4 parasites/μl, with 100% specificity against various blood-borne pathogens causing malaria-like symptoms. Additionally, pp-IPA needs only liquid-transfer skill for operation and the cost is around USD 0.25 per test, making it at least 300 times lower than mainstream POCT platforms.ConclusionsDesigned to improve the accessibility of molecular detection in resource-limited settings, pp-IPA’s simplicity, affordability, high sensitivity/specificity, and minimal equipment requirements make it a promising point-of-care pathogen identification tool in resource-constrained regions.Graphical

Correlation between notifiable infectious diseases and transportation passenger traffic from 2013 to 2019 in mainland China

PurposePopulation mobility significantly contributes to the spread and prevalence of infectious diseases, posing a serious threat to public health safety and sustainable development across the globe. Understanding the impact of population mobility on the prevention and control of infectious diseases holds profound significance.MethodsIn this study, we collected the data on the incidence of notifiable infectious diseases in mainland China from 2013 to 2019, and analyzed the characteristics of notifiable infectious diseases, as well as their correlation with transportation passenger traffic.ResultsAmong 29 common notifiable infectious diseases, the incidence rate of intestinal diseases per 100,000 people was the highest (256.35 cases), while the mortality rate was the lowest (0.017 cases). The mortality rate per 100,000 people due to sexually transmitted and bloodborne diseases was the highest (1.154 cases). A significant linear correlation was noted between commercial passenger traffic and the number of cases of tuberculosis (r = 0.83, P = 0.022), hepatitis A (r = 0.87, P = 0.012), bacillary and amebic dysentery (r = 0.90, P = 0.006), typhoid/paratyphoid (r = 0.94, P = 0.002), leptospirosis (r = 0.90, P = 0.005), AIDS(r=-0.90, P = 0.006), gonorrhea (r=-0.79, P = 0.035) and scarlet fever (r=-0.85, P = 0.016). A significant linear correlation was noted between public transportation passenger traffic and the number of cases of measles (r = 0.94, P = 0.002), hepatitis A (r = 0.96, P = 0.001), parasitic and vector-borne diseases (r = 0.96, P = 0.001), brucellosis (r = 0.95, P = 0.001), leptospirosis (r = 0.88, P = 0.008), other infectious diarrhea (r = 0.86, P = 0.013) and gonorrhea (r = 0.84, P = 0.018).ConclusionThe results of this study indicated that transportation passenger traffic significantly affected the incidence of infectious diseases, and reasonable management of passenger traffic was a potentially important means of prevention and control of infectious diseases.

Prevalence and risk factors for blood-borne viruses among multi-transfused patients in Sana'a City, Yemen

Background: Blood-borne viruses (BBVs), like hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) among multi-transfused patients (MTPs), remain a major public health problem in Yemen. This study aimed to determine the seroprevalence of BBVs and associated risk factors among MTPs. Methods: A cross-sectional study was conducted on MTPs at the Yemeni Society for Thalassemia, National Oncology Center, and Al Kuwait University Hospital in Sana’a City. Data were collected through face-to-face interviews using a predesigned questionnaire. Blood samples were drawn and tested for HBsAg, anti-HCV, and HIV-1,2 by using an electrochemiluminescence immunoassay technique. Results: Among 361 MTPs, the overall seroprevalence of BBVs was 6.8%; seropositivity of HBsAg, anti-HCV, and anti-HIV-1,2 was 3.9%, 2.9%, and 0.0%, respectively. An increase in family size and low income were significantly associated factors with HBV infection. In addition, increases in age and blood transfusion units were found to be significant predictors for HCV (p&lt;0.05). Conclusion: Although the seroprevalence of BBVs is low, it remains a major problem among MTPs. The most frequent infection was HBV, followed by HCV, with a significantly higher rate among leukemia patients. Regular mentoring for viral markers and mandatory implementation of HCV antigen-antibodies testing as well as advanced technology in blood screening are highly recommended.

Assessing the Economic Feasibility of Needle-Retractable Safety Syringes (NRSS) Adoption in Indian Healthcare Facilities

Description: Globally, sixteen billion injections are given each year, 95.00% of which are for medicinal purposes. This global injection burden is accounted for by India between 24.5% and 31.0%, and alarmingly, over 62.50% of these injections are performed improperly or are repeated. Objectives: The purpose of this study is to assess the increased costs incurred by transitioning from traditional disposable syringes to Needle-Retractable Safety Syringes (NRSS) for beneficial usage in India. Methods: Utilizing a decision tree model, we evaluated the occurrence of needle-stick injuries and syringe reuse among healthcare personnel and patients. We calculated the lifetime costs associated with HIV - Human Immunodeficiency Virus, HBV - Hepatitis B Virus, and HCV - Hepatitis C Virus infections using three Markov models. Results: NRSS offer substantial benefits by reducing needle-stick injuries and preventing blood-borne infections. Among the options analyzed, Reuse Prevention (RUP) syringes emerged as the most cost-effective choice. In contrast, Single-Use Prevention (SIP) and NRSS syringes are currently not deemed cost-effective at their prevailing prices. We recommend prioritizing RUP syringes and exploring strategies to make them more affordable for broader accessibility. Conclusion: Our analysis suggests that, in the Indian context, RUP syringes present an economically viable solution. However, SIP and NRSS syringes do not currently offer cost-effectiveness. To enhance the cost-effectiveness of NRSS, concerted efforts should be directed towards reducing their price. Abbreviations: NRSS, Needle-Retractable Safety Syringes; RUP, Reuse Prevention; SIP, Single-Use Prevention; NSI, Needle Stick Injuries; BBI, Blood-borne Infections; QOL, Quality-of-life; BCC, Behavior Change Communication.