The elimination of hepatitis B virus infection: Changing seroepidemiology of hepatitis A and B virus infection in Okinawa, Japan over a 26-year period

Norihiro Furusyo, Jun Hayashi, Yasunori Sawayama, Yasunobu Kawakami, Yasuhiro Kishihara, Seizaburo Kashiwagi

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29 Citations (Scopus)

Abstract

Serial changes in hepatitis A virus (HAV) and B virus (HBV) markers were determined from 1970 to 1996 in healthy Japanese residents of a rural area of Okinawa, Japan. All 190 serum samples taken in 1970, 791 in 1980, 708 in 1988, and 523 in 1996 from residents 0 to more than 60 years of age were tested for antibody to HAV (anti-HAV), antibody to hepatitis B core antigen (anti-HBc), and hepatitis B surface antigen (HBsAg). The age-adjusted prevalences of anti-HAV and anti-HBc decreased significantly from 83.9% and 74.9%, respectively, in 1970 to 39.7% and 36.6%, respectively, in 1996. In residents ≤ 29 years of age, the prevalences of anti-HAV and anti-HBc decreased significantly from 65.3% and 83.8%, respectively, in 1970 to 0.7% and 8.2%, respectively, in 1996. The age-adjusted HBsAg prevalence decreased significantly from 8.2% in 1980 to 4.1% in 1988. These results indicate that exposure to HAV and HBV infections among Okinawa residents less than 29 years of age is decreasing, probably because of improvements in socioeconomic conditions since 1970. Infection with HBV may be eliminated there in the near future.

Original languageEnglish
Pages (from-to)693-698
Number of pages6
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume59
Issue number5
DOIs
Publication statusPublished - Nov 1998

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases
  • Virology

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