[Prevalence of intestinal nematodes during 2004-2008 in Nanjing]

Surveys on intestinal nematode infection were conducted in 65 monitoring sites in Nanjing City during 2004-2008. Eggs in stool samples from 46226 residents were examined by modified Kato-Katz thick smear method in the 5 years. The prevalence was reduced from 3.0% in 2004 to 0.7% in 2008, decreased by 75.3%. The prevalence in rural area (2.9%) was higher than that of city (0.9%) (chi2=1024.63, P<0.01). The highest prevalence was in the group of under 10 years (5.2%) (chi2=331.18, P<0.01).