Epidemiology of malaria in Attapeu Province, Lao PDR in relation to entomological parameters

• Published in: Transactions of the Royal Society of Tropical Medicine and Hygiene Vol. 99; no. 11; pp. 833 - 839
• Main Authors: Vythilingam, I., Sidavong, B., Chan, S.T., Phonemixay, T., Vanisaveth, V., Sisoulad, P., Phetsouvanh, R., Hakim, S. Lokman, Phompida, S.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.11.2005; Royal Society of Tropical Medicine and Hygiene; Elsevier
• Subjects: Adolescent; Age Distribution; Animals; Anopheles - classification; Anopheles - parasitology; Anopheles dirus A; Biological and medical sciences; Case-Control Studies; Child; Child, Preschool; Female; Human protozoal diseases; Humans; Infectious diseases; Lao PDR; Laos - epidemiology; Malaria; Malaria - blood; Malaria - epidemiology; Malaria - transmission; Male; Medical sciences; Parasitic diseases; Plasmodium falciparum; Plasmodium falciparum - isolation & purification; Plasmodium falciparum - parasitology; Prevalence; Protozoal diseases; Asia; Laos; Plasmodium falciparum; Lao PDR; Malaria; Anopheles dirus A; Human; Protozoa; Apicomplexa; Protozoal disease; Entomology; Insecta; Parasitosis; Epidemiology; Infection; Anopheles; Arthropoda; Culicidae; Tropical medicine; Invertebrata; Diptera; Public health
• ISSN: 0035-9203; 1878-3503
• DOI: 10.1016/j.trstmh.2005.06.012

Surveys were conducted in malaria-endemic villages in the southern province of Attapeu, Lao PDR during various seasons over a 3-year period. All-night mosquito landing collections, blood surveys and a case–control study were conducted. Plasmodium falciparum was the predominant species, and slide positivity rates were higher during the transition/dry season compared with the wet season. Anopheles dirus A was found to be the primary vector, and sporozoite rates were highest during the transition/dry season. Anopheles dirus was found to be endophagic and endophilic. Not using insecticide-treated bed nets, houses close to breeding sites and sleeping away from home were risk factors associated with malaria.