論文

査読有り
2015年12月

Effectiveness of Large-Scale Chagas Disease Vector Control Program in Nicaragua by Residual Insecticide Spraying against Triatoma dimidiata

AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
  • Kota Yoshioka
  • ,
  • Jiro Nakamura
  • ,
  • Byron Perez
  • ,
  • Doribel Tercero
  • ,
  • Lenin Perez
  • ,
  • Yuichiro Tabaru

93
6
開始ページ
1231
終了ページ
1239
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.4269/ajtmh.15-0403
出版者・発行元
AMER SOC TROP MED & HYGIENE

Chagas disease is one of the most serious health problems in Latin America. Because the disease is transmitted mainly by triatomine vectors, a three-phase vector control strategy was used to reduce its vector-borne transmission. In Nicaragua, we implemented an indoor insecticide spraying program in five northern departments to reduce house infestation by Triatoma dimidiata. The spraying program was performed in two rounds. After each round, we conducted entomological evaluation to compare the vector infestation level before and after spraying. A total of 66,200 and 44,683 houses were sprayed in the first and second spraying rounds, respectively. The entomological evaluation showed that the proportion of houses infested by T. dimidiata was reduced from 17.0% to 3.0% after the first spraying, which was statistically significant (P < 0.0001). However, the second spraying round did not demonstrate clear effectiveness. Space time analysis revealed that reinfestation of T. dimidiata is more likely to occur in clusters where the pre-spray infestation level is high. Here we discuss how large-scale insecticide spraying is neither effective nor affordable when T. dimidiata is widely distributed at low infestation levels. Further challenges involve research on T. dimidiata reinfestation, diversification of vector control strategies, and implementation of sustainable vector surveillance.

Web of Science ® 被引用回数 : 8

リンク情報
DOI
https://doi.org/10.4269/ajtmh.15-0403
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26416118
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000366540800020&DestApp=WOS_CPL

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