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Hepatitis B virus transmission in nursery schools
American Journal of Epidemiology
|March 1, 1987
Summary
Hepatitis B virus (HBV) transmission is a risk in nursery schools with carriers. Vaccination is crucial for susceptible children to prevent the spread of hepatitis B infection.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Background:
- Hepatitis B virus (HBV) is a significant global health concern.
- Transmission routes in childcare settings are not fully understood.
- The presence of hepatitis B surface antigen (HBsAg) carriers in nurseries poses a potential risk.
Purpose of the Study:
- To investigate the occurrence and transmission of hepatitis B virus among children attending nursery schools.
- To identify the role of hepatitis B e antigen (HBeAg) positive carriers in HBV transmission within this population.
- To assess the necessity of vaccination for susceptible children in nursery settings.
Main Methods:
- A cohort of 269 children (mean age 2.9 years) from five nursery schools with known HBsAg carriers were monitored from 1979 to 1982.
- Hepatitis B markers, including HBsAg, HBeAg, and antibodies to hepatitis B core antigen (anti-HBc IgM), were tested.
- Infection rates and potential transmission links were analyzed.
Main Results:
- 15.6% of children tested positive for HBsAg.
- Ten children were potentially infected by HBeAg-positive carriers, with four developing chronic HBsAg carriage and six transient antigenemia.
- Three children showed evidence of recent infection (anti-HBc IgM positive).
Conclusions:
- Nursery schools with HBsAg carriers, particularly those positive for HBeAg, are sites of significant hepatitis B virus transmission.
- These findings underscore the importance of vaccinating susceptible children to prevent HBV infection in childcare environments.
- Early detection and intervention strategies are vital for controlling hepatitis B spread in pediatric populations.
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