Related Experiment Videos
Decrease of hepatitis A and B virus infections in the population of Okinawa, Japan.
A Noguchi1, J Hayashi, K Nakashima
1Department of General Medicine, Kyushu University Hospital, Fukuoka, Japan.
The Journal of Infection
|November 1, 1991
Summary
Hepatitis A (HAV) and Hepatitis B (HBV) infections significantly declined in Okinawa
Area of Science:
- Epidemiology
- Viral Hepatitis
- Public Health
Background:
- Hepatitis B virus (HBV) and Hepatitis A virus (HAV) are significant global health concerns.
- Okinawa, Japan, has historically shown varying prevalence rates for these viral infections.
Purpose of the Study:
- To assess the seroprevalence of HBV and HAV infections in Hateruma and Iriomote Islands, Okinawa.
- To compare current infection rates with historical data from 1970 and 1980.
- To identify trends in viral hepatitis prevalence among different age groups.
Main Methods:
- Serum samples from 1282 healthy individuals collected in 1988.
- Serological testing for hepatitis B surface antigen (HBsAg), antibody to hepatitis B core antigen (anti-HBc), and antibody to hepatitis A virus (anti-HAV).
- Comparison of 1988 data with previous serosurveys from 1970 and 1980.
Main Results:
- Overall prevalence of HBsAg was 3.7% (Hateruma) and 3.8% (Iriomote).
- Overall prevalence of anti-HBc was 64.8% (Hateruma) and 44.9% (Iriomote), showing a decrease from 1980.
- Anti-HAV prevalence dropped to 50.9%, with significant reductions observed in children and young adults.
Conclusions:
- HBV and HAV infections have markedly decreased among children and young adults in Okinawa over two decades.
- Public health interventions may have contributed to the observed decline in viral hepatitis.
- Continued surveillance is essential to monitor hepatitis trends in the region.