| incidence of antibodies against human immunodeficiency virus, human t-cell lymphotropic virus type 1, hepatitis b virus, hemorrhagic fever with renal syndrome virus and chlamydia in tonga and western samoa. | among the populations of tonga and western samoa, serum antibodies against human immunodeficiency virus or hemorrhagic fever with renal syndrome virus were not detected (0/904 and 0/192). no serum samples were considered to be positive for antibody against human t-cell lymphotropic virus type 1 (0/527). hepatitis b antigen and antibody were found in 4% (8/192) and 47% (90/192), respectively. chlamydia trachomatis igg and c. psittaci igg antibodies were detected in 39% (75/192) and 47% (91/192), ... | 1990 | 2126048 |
| hepatitis delta virus infection: a recently imported disease in new zealand. | in a study of 565 hepatitis b antigen (hbsag) positive persons from the auckland region, antibody to the hepatitis delta virus was detected in 38. the largest number were in samoans (61%) although the infection was present in some other pacific islanders. among hbsag positive healthy blood donors, antenatal patients and acute hepatitis patients between 3.8 and 4.8% were anti-delta positive; while 28% of chronic hepatitis patients were positive suggesting an association between this disease and d ... | 1987 | 3454892 |
| the prevalence of antibodies to hepatitis a and b viruses in port chalmers residents. | | 1982 | 6281700 |
| the prevalence of hepatitis b infection amongst urban and rural populations in western samoa. | a group of 240 urban and 200 rural dwellers in western samoa over the age of 20 years was studied for serological evidence of current or past infection with hepatitis b virus (hbv). overall, 5.5% of subjects were found to be currently infected with hbv and a further 74.5% showed detectable levels of antibody. antibody to the hepatitis b core antigen was found to be a better marker of past infection than antibody to the surface antigen of the virus. both the infection rate and carrier rate were h ... | 1981 | 7462598 |
| effect of a hepatitis b vaccination program on the prevalence of hepatitis b virus infection. | in april 1991, surveys for serologic evidence of hepatitis b virus (hbv) infection were conducted among 3- to 4-year-old children born after a hepatitis b immunization program of newborns began and among 6- to 11-year-old children targeted for early childhood vaccination in american samoa. compared with 3- to 4-year-olds tested in 1991, children tested at baseline in 1985 were more likely to have been infected with hbv (5/40 vs. 2/93; prevalence ratio [pr] = 5.8, 95% confidence limits [cl] = 1.2 ... | 1993 | 8418167 |
| long term antibody response to hepatitis b vaccination beginning at birth and to subsequent booster vaccination. | few studies have examined the long term persistence of antibody after hepatitis b immunization beginning at birth and the response to a subsequent challenge with a booster dose of vaccine. | 2003 | 12586980 |