The Evaluation of the First Year National Plague Control Program in Vietnam
Yonsei Reports on Tropical Medicine 1971³â 2±Ç 1È£ p.101 ~ 109
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È²ÃæÇö ( Hwang Choong-Hyun ) - Institute of Tropical Medicine Yunsei University
KMID : 0311219710020010101
Abstract
The increasing trend of plague out-break in Vietnam compelled to establish the implementation of the nation-wide plague control during 1968 to 1969.
The activities of the programme were concentrated to reduce and/or eliminate the source of human plague by management of the disease, control of rodents and the ectoparasite and mass immunization.
The satisfactory results which were expected at the programming could not be achieved due to several difficulties; lack of potent personnel, materials, funds and political uneasy situations. Insecticide dusting covered only 58. 3% in the programmed houses and huts. The vaccination campaign provided 46. 8% administration of the population.
In spite of those handicaps, flea index was reduced to 1. 2 in the post-dusting phase from 1. 5 of the pre-dusting.
It was clear that the areas were mostly infestated by the common rats?R. exulans( 42. 5%), R. norvegicus (39. 4%), R. rattus (5.3%),. and Suncus murinus?house shrew (12. 1%). These rodents were infestated by Xenopsylla cheopis known as a main vector of plague.
The laboratory findings showed that the fleas ?X. cheopis? in the areas were resistant to DDT but not to malathion.
However, the disease incidence in the sampled areas showed dicrease. It was an indicate that intensive trials of dusting and vaccination may contribute to minimize the out-break of plague.
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