| prevalence of antibody to hepatitis a virus in okinawa and kyushu, japan. | between 1968 and 1981, a total of 1955 serum samples from healthy subjects chosen at random in seven districts of okinawa and two districts of kyushu were surveyed for antibody to hepatitis a virus (anti-hav) by radioimmunoassay. overall prevalence of anti-hav was 55.1% in okinawa and 35.9% in kyushu. prevalence of less than 10% was observed in subjects less than or equal to 14 years of age in okinawa and less than or equal to 24 years of age in kyushu. in three of the districts of okinawa, seco ... | 1983 | 6297296 |
| the elimination of hepatitis b virus infection: changing seroepidemiology of hepatitis a and b virus infection in okinawa, japan over a 26-year period. | 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 significan ... | 1998 | 9840583 |