| prevalence of hepatitis a virus antibody among navajo school children. | previous studies of the prevalence of immunity to hepatitis a (anti-hav) in the united states have used urban settings or institutions for the mentally handicapped. in a rural setting among normal children, a serologic investigation of prevalence of anti-hav was conducted in a boarding school adjacent to the navajo reservation. the results show rates of anti-hav that are the highest reported at the ages tested in any subpopulation in the united states, comparable only with those in developing co ... | 1986 | 3004239 |