Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine Graduate Programs in the Biomedical Sciences and Public Health
نویسندگان
چکیده
Evaluation of Aedes aegypti Presence and Abundance in Septic Tanks and Their Impacts on Dengue Transmission Ronald L. Burke, Doctor of Public Health, 2009 Thesis directed by: David M. Claborn Assistant Professor Department of Preventive Medicine and Biometrics Background: Aedes aegypti is the mosquito vector for dengue fever and has historically been considered to prefer ‘clean’ water for development. A 2006 study by the Centers for Disease Control and Prevention (CDC) demonstrated large numbers of adult Ae. aegypti mosquitoes emerging from septic tanks in Puerto Rico. The purposes of this study were (1) to definitively document larval presence in septic tanks and evaluate the water properties and environmental factors related to that presence, (2) examine the use of 2,2dichlorovinyl dimethyl phosphate impregnated strips for control of mosquito productivity in septic tanks, and (3) use Geographic Information Systems to examine the association between the presence of septic tanks and other environmental factors and the incidence of dengue in Puerto Rico. Materials and Methods: A miniaturized funnel trap (Vietrap) was used to sample 89 septic tanks in the Puerto Rican community of Playa/Playita. Water quality samples were also obtained from each septic tank. Adult emergence trapping was conducted on 25 septic tanks in the community of Las Mareas in order to test the effectiveness of the impregnated strips for controlling mosquito productivity. Maps of sewerage lines were used to identify populated areas which did not have a sewerage system (i.e. used septic tanks) and compared to laboratory confirmed cases of dengue from 2003 2008, as reported by the CDC. Results: Larvae were recovered from 18% of the sampled tanks. Larval presence was positively associated with uncapped tank access ports and cracked walls. Larval abundance was positively associated with uncapped tank access ports, cracked walls, and
منابع مشابه
UNIFORMED SERVICES UNIVERSITY OF THE HEALTH SCIENCES F. EDWARD HEBERT SCHOOL OF MEDICINE GRADUATE PROGRAMS IN T]ciE BIOMEDlCAL SCIENCES . AND PUBLIC HEALTH
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Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine Graduate Programs in the Biomedical Sciences and Public Health
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متن کاملUniformed Services University of the Health Science F. Edward Hebert School of Medicine Graduate Programs in the Biomedical Sciences and Public Health
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