An outbreak of hepatitis A virus among children in a flood rescue camp: A post-disaster catastrophe

Food Safety Knowledge, Attitude, and Hygienic Practices of Food Handlers in Yeka Sub-city, Addis Ababa, Ethiopia: A Descriptive Cross-sectional Study

Introduction

Foodborne diseases pose a significant global public health threat, often originating from improper food handling practices. Given the crucial role of food handlers in preventing transmission of foodborne diseases, this study assessed the food safety knowledge, attitudes, and hygiene practices related to foodborne diseases among food handlers in food service establishments in Yeka Sub-city, Addis Ababa, Ethiopia.

Method

A descriptive cross-sectional study was conducted among 373 randomly selected food handlers. Data collection involved observing the kitchen hygiene practices and food handling practices through an observational checklist, and administering structured/standardized questionnaires. Statistical analysis was performed using SPSS version 20, with associations examined using the linear by linear association test. Spearman's correlation assessed relationships between knowledge, attitude, and practice cut points. Pre-testing and Cronbach's alpha were used to ensure the reproducibility, and reliability of the questionnaire.

Results

Majority of food handlers (50.1%) were aged less than 25 years, with 78.8% being female, and attended secondary school (46.4%). The overall knowledge (65%), positive attitude (92.2%), and hygiene practices (44%) of the food handlers toward food safety were good. Regarding the knowledge perspective, gaps existed in understanding disease transmission, notably Hepatitis A and tuberculosis. Although positive attitudes toward food safety were reported, observed practices were inconsistent, with a significant proportion admitting to working while ill. Compliance with uniform and protective gear was lacking. Marital status, Experience in food safety, and Work satisfaction has been shown to affect the knowledge, attitude, and hygiene practices of food handlers in this study.

Conclusion

This study highlights critical gaps in understanding disease transmission, and hygiene practices of food handlers in Yeka sub-city. Addressing these gaps will necessitate targeted interventions, including continuous education and training programs. Enhanced regulatory oversight is also needed to ensure compliance with food safety standards in public food establishments.

The Impact of Climate Change, Pollution, and Biodiversity Loss on Digestive Health and Disease

The environment is changing rapidly under pressure from 3 related drivers: climate change, pollution, and biodiversity loss. These environmental changes are affecting digestive health and disease in multiple ways. Heat extremes can cause intestinal and hepatic dysfunction. Access to adequate amounts of food of high nutritional content and to clean water is under threat. Extreme weather is associated with flooding and enteric infections and affects the delivery of care through infrastructure loss. Air, water, and soil pollution from chemicals and plastics are emerging as risk factors for a variety of intestinal diseases including eosinophilic esophagitis, metabolic dysfunction associated fatty liver disease, digestive tract cancers, inflammatory bowel disease, and functional bowel disease. Migration of populations to cities and between countries poses a special challenge to the delivery of digestive care. The response to the threat of environmental change is well underway in the global digestive health community, especially with regard to understanding and reducing the environmental impact of endoscopy. Individuals, and peer societies, are becoming more engaged, and have an important role to play in meeting the challenge.

Point-of-Care Testing for Hepatitis Viruses: A Growing Need

Viral hepatitis, caused by hepatitis A virus (HAV), hepatitis B virus (HBV), hepatitis C virus (HCV), hepatitis D virus (HDV), or hepatitis E virus (HEV), is a major global public health problem. These viruses cause millions of infections each year, and chronic infections with HBV, HCV, or HDV can lead to severe liver complications; however, they are underdiagnosed. Achieving the World Health Organization's viral hepatitis elimination goals by 2030 will require access to simpler, faster, and less expensive diagnostics. The development and implementation of point-of-care (POC) testing methods that can be performed outside of a laboratory for the diagnosis of viral hepatitis infections is a promising approach to facilitate and expedite WHO's elimination targets. While a few markers of viral hepatitis are already available in POC formats, tests for additional markers or using novel technologies need to be developed and validated for clinical use. Potential methods and uses for the POC testing of antibodies, antigens, and nucleic acids that relate to the diagnosis, monitoring, or surveillance of viral hepatitis infections are discussed here. Unmet needs and areas where additional research is needed are also described.

Sociodemographic and spatiotemporal profiles of hepatitis-A in the state of Pará, Brazil, based on reported notified cases

Hepatitis-A virus is a worldwide healthcare problem, mainly affecting countries with poor sanitary and socioeconomic conditions. This communication evaluates the spatiotemporal variability of the disease's socioepidemiological profile in one of the endemic Brazilian regions (Pará State) prior to (2008-2013) and after (2014-2017) the launch of the national public vaccination programme. Hepatitis-A epidemiological reports concerning Pará State - Brazil - were used for this study including municipalitylevel data of the disease's reported positive notification cases (PNCs). The analyses involved socioepidemiological profiling and space-time scan statistics. A total of 5500 PNCs were reported in the study period. On average, PNCs decreased over time throughout the state, with strongest drops after 2015. The PNCs were specific for gender, race/ethnic origin and age group. The predominant gender and race/ethnic groups was male and brown, respectively. While children were the most susceptible age group prior to 2015, there was a shift towards older ages (young and adults) in later years. Those found to be the most affected by the disease, as shown by space-time scan statistics, were people in densely populated municipalities with unsatisfactory sanitary conditions and also less well covered by the public vaccination programme. Despite drops in the number of hepatitis-A PNCs, thanks to the national vaccination programme, the disease still persists in Pará State and elsewhere in Brazil. The present study reinforces the need of continuous prevention and control strategies for effective control and erradication of hepatitis-A.

Safety and immunogenicity of inactivated hepatitis-A vaccine developed by Human Biologicals Institute in two age groups of healthy subjects: A phase I open label study

BACKGROUND

Hepatitis-A is an acute viral infection of the liver. Hepatitis-A virus has worldwide spread and is endemic in India. Though the disease is self-limiting in most cases, outbreaks are reported frequently from both developing and developed countries of the world. Severity and fatality occur more among infected symptomatic adults. The infection can be prevented with proper and timely immunization. This phase I, single arm, open label, multicenter trial was designed to assess the safety and immunogenicity of the inactivated hepatitis-A vaccine developed by Human Biologicals Institute when administered in a single dose in two age groups of healthy subjects.

METHODS

This study was carried out in 55 subjects in two healthy age groups at two centers in India. Group A included subjects of 19-49 years and group B subjects of 12-18 years of age. Enrolled subjects received a single dose of inactivated hepatitis A vaccine. Blood samples were collected at baseline and 4-6 weeks after vaccination. Safety was assessed by collection and analysis of data on solicited and unsolicited adverse events and immunogenicity was assessed by estimating the seroconversion rate, seroprotection rate and the geometric mean titres of antibodies.

RESULTS

Among the 55 subjects enrolled, 15 reported adverse events. No serious adverse event was reported. Pain at the injection site was the lone local adverse event. Systemic adverse events reported in Group A were: fatigue, headache, diarrhoea, fever, anorexia, nausea and upper respiratory tract infection, whereas there was no systemic event reported in Group B. There was 100% seroconversion and seroprotection and significant rise in antibody titre levels were observed in both the groups post vaccination.

CONCLUSIONS

This study found HBI inactivated hepatitis-A vaccine to be safe and highly immunogenic when administered as a single dose in adolescent and adult subjects.

Natural Host-Environmental Media-Human: A New Potential Pathway of COVID-19 Outbreak

Identifying the first infected case (patient zero) is key in tracing the origin of a virus; however, doing so is extremely challenging. Patient zero for coronavirus disease 2019 (COVID-19) is likely to be permanently unknown. Here, we propose a new viral transmission route by focusing on the environmental media containing viruses of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) or RaTG3-related bat-borne coronavirus (Bat-CoV), which we term the "environmental quasi-host." We reason that the environmental quasi-host is likely to be a key node in helping recognize the origin of SARS-CoV-2; thus, SARS-CoV-2 might be transmitted along the route of natural host-environmental media-human. Reflecting upon viral outbreaks in the history of humanity, we realize that many epidemic events are caused by direct contact between humans and environmental media containing infectious viruses. Indeed, contacts between humans and environmental quasi-hosts are greatly increasing as the space of human activity incrementally overlaps with animals' living spaces, due to the rapid development and population growth of human society. Moreover, viruses can survive for a long time in environmental media. Therefore, we propose a new potential mechanism to trace the origin of the COVID-19 outbreak.

Operation Navajeevan: A Public-Private Partnership Model for Disaster Relief in Kozhikode, India

INTRODUCTION

In August 2018, India's southern state of Kerala experienced its worst flooding in over a century. This report describes the relief efforts in Kozhikode, a coastal region of Kerala, where Operation Navajeevan was initiated.

SOURCES

Data were collected from a centralized database at the command center in the District Medical Office as well as first-hand accounts from providers who participated in the relief effort.

OBSERVATIONS

From August 15 through September 8, 2018, 36,846 flood victims were seen at 280 relief camps. The most common cause for presentation was exacerbation of an on-going chronic medical condition (18,490; 50.2%). Other common presentations included acute respiratory infection (7,451; 20.2%), traumatic injuries (3,736; 10.4%), and psychiatric illness (5,327; 14.5%).

ANALYSIS

The prevalence of chronic disease exacerbation as the primary presentation during Operation Navajeevan represents an epidemiologic shift in disaster relief in India. It is foreseeable that as access to health care improves in low- and middle-income countries (LMICs), and climate change increases the prevalence of extreme weather events around the world, that this trend will continue.

Infectious Diseases After Hydrologic Disasters

Hydrologic disasters, including hurricanes, tsunamis, and severe flooding, have been associated with infectious diseases, particularly among vulnerable and displaced populations in resource-poor settings. Skin and soft tissue infections, gastrointestinal infections, respiratory infections, zoonotic infections, and vector-borne diseases each present unique threats to human health in this setting. Increased emergency physician awareness of these infectious diseases and their diagnosis and management helps optimize medical care for survivors after a hydrologic disaster and safeguard the health of disaster responders.

Molecular genetic identification of isolates of the hepatitis A virus (HAV) from monkeys at Adler Primate Center

BACKGROUND

The aim of this study was to assess prevalence and genetic variability of hepatitis A virus (HAV) isolates in monkeys born and kept at Adler Primate Center, as well as in imported animals.

METHODS

The fecal samples from various species of monkeys (n = 119) were studied using reverse transcription seminested PCR, sequencing, and phylogenetic analysis.

RESULTS

HAV RNA was detected in 2 Macaca mulatta and 1 Macaca fascicularis (3.8%) kept at Adler Primate Center (n = 79) and in 11 (27.5%) Chlorocebus pygerythrus (n = 40) imported from Tanzania. Phylogenetic analysis demonstrated that all HAV strains belonged to simian genotype V, but differed from the prototype genotype V strain (AGM-27) by 5.4%-5.5%. Sequences isolated in this study differed by only 0.1%, suggesting a common source of infection.

CONCLUSIONS

This study demonstrated the asymptomatic circulation of HAV genotype V among the monkeys at Adler Primate Center, and it indicated the significant genetic diversity within this HAV genotype.

Natural disaster management: experience of an academic institution after a 7.8 magnitude earthquake in Ecuador

OBJECTIVES

This case study describes the implementation of an academic institution's disaster management plan.

STUDY DESIGN

Case study.

METHODS

USFQ's Medical School developed a six-phase disaster relief plan consisting of: induction, establishing a base camp, crisis management and mental health aid, creation of multidisciplinary teams and multi-agency teams, and reconstruction. Each phase uses a community-oriented approach to foster survivor autonomy and recovery.

RESULTS

Our methodology facilitated the successful implementation of multidisciplinary interventions to manage the earthquake's aftermath on the personal, community and regional levels, treated and prevented psychological and physical morbidity among survivors and promoted healthy living conditions and independence.

CONCLUSIONS

A multidisciplinary response team that addresses medical needs, mental health, education, food, nutrition and sanitation is highly effective in contributing to timely, effective relief efforts. The short- and long-term solutions we describe could be applicable to other academic centres' interventions in future disaster scenarios around the world.