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[Epidemiology of hepatitis B (author's transl)]
MMW, Munchener Medizinische Wochenschrift
|November 23, 1979
Summary
Hepatitis B spread through the enteral route in an institution for children with intellectual disabilities. Persistent Hepatitis B virus (HBV) infection was noted in children with trisomy 21, who shed the virus in bodily fluids.
Area of Science:
- Hepatology
- Infectious Diseases
- Epidemiology
Context:
- An institution for children with intellectual disabilities experienced a Hepatitis B epidemic.
- The study investigated the transmission routes and epidemiological patterns of Hepatitis B within this specific population.
- Children with trisomy 21 showed a higher prevalence of persistent Hepatitis B surface antigen.
Purpose:
- To determine the mode of Hepatitis B transmission in an institutionalized population.
- To understand the epidemiology of Hepatitis B in children with intellectual disabilities, including those with trisomy 21.
- To identify shedding of Hepatitis B virus (HBV) in bodily fluids among infected individuals.
Summary:
- Approximately 50% of children were infected via the enteral route.
- Seven children experienced acute Hepatitis B and recovered; nine showed persistent Hepatitis B surface antigen without symptoms, six of whom had trisomy 21.
- Children with trisomy 21 shed Hepatitis B surface antigen in saliva, tears, and urine, and 80% of close contacts (family, staff) were infected.
Impact:
- Highlights the significant risk of Hepatitis B transmission in institutional settings.
- Identifies trisomy 21 as a potential factor associated with persistent HBV infection and viral shedding.
- Underscores the importance of infection control measures and screening for Hepatitis B in vulnerable populations and their contacts.