| an examination of current control strategies for asian schistosomiasis in the dongting lake region of china. ii. a five year follow-up survey on qingshan island. | in 1995-1996 we conducted an epidemiological survey in two communities (1656 individuals) on qingshan island, hunan province p.r. china, in order to determine the efficacy of current control strategies since their upgrading in 1991. in 1996, the overall prevalence for schistosoma japonicum, ascaris lumbricoides, ancylostoma duodenale, and trichuris trichiura had decreased moderately since 1991. the age-specific prevalence for s. japonicum for each of the representative age groups decreased sligh ... | 1997 | 9352005 |