A study was required to evaluate the prevalence of @entity14007 among school @entity1 in the 7 differnet schools located near the Gumho basin and to determine the effectiveness of the anticlonorchis campaign conducted in that area. Surveys for @entity2440 and the worm burden in the same areas were compared for the period 1960-1970. Both surveys concentrated on @entity1 in grades 1-3 ranging from 6-11 years old. They were examined using primarily intradermal tests with @entity2440 antigen and followed by stool examinations. Stool examinations consisting of the @entity406 -ether sedimentation(Ritchie, 1948 ) and the Stoll egg-count techniques were performed in those cases which revealed positive and doubtful intradermal reactions. The overall prevalence rate for @entity14007 was reduced from 13.4 per cent to 4.1 per cent. There was also a significant reduction in the worm burden, suggesting that no @entity14007 will be found among chileren in the near future. In connection with this survey, the prevalence rate for intestinal helminths in 1960 was compared with 1970. The rate for @entity9124 had decreased, while the rates for @entity13857 and Trichostrongylus species had increased. No fluctuation in the rate of hookworm was observed during the past 10 years. Clearly, the present survey denotes a requirement for a combined procedure of health education and mass survey with intradermal testing. It has been found that these methods not only greatly reduce the prevalence of @entity14007 but also is followed by the marked reductions of the worm burdens of the @entity1 examined.

Changing Pattern Of @entity2440 Infection Among School XXXX In The Gumho Basin, Kyungpook Province, Korea.

@entity1 :: ('9606', 'Species') :: ['children'] @entity14007 :: ('MESH:D003003', 'Disease') :: ['clonorchiasis'] @entity406 :: ('MESH:D005557', 'Chemical') :: ['formalin'] @entity9124 :: ('6252', 'Species') :: ['Ascaris lumbricoides'] @entity2440 :: ('79923', 'Species') :: ['Clonorchis', 'Clonorchis sinensis'] @entity13857 :: ('36087', 'Species') :: ['Trichuris trichiura']
@entity1 :: (9606,Species) :: ['Children']
