[Investigation of pinworm infection among Kindergarten children in Ninghai County].

6,257 children in 39 kindergartens were examined by adhesive tape wiping in the morning during April, 2009 to November, 2010, and 460 children were found pinworm infected with a prevalence of 7.4% (460/6,257), 7.7% (260/3,359) in girls and 6.9% (200/2,898) in boys. Children in junior class had lowest infection rate of 4.6% (77/1,667), while children in senior class had highest rate of 9.7% (252/2,594) (chi2 = 36.8, P < 0.01). Furthermore, the rate in public kindergartens (6.5%, 255/3,927) was lower than that in private kindergartens (8.8%, 255/2,330) (chi2 = 11.4, P < 0.01) , and the rate in urban kindergartens (12.4%, 199/1,611) was much higher than that in rural kindergartens (5.6%, 261/4,646) (chi2 = 79.7, P < 0.01) . Evidently, pinworm prevalence is high in children in Ninghai, and it is higher in private and urban kindergartens than in public and rural ones respectively.