Seasonal abundance of dengue vectors in Manila, Republic of the Philippines
Schultz, G.W.
Southeast Asian Journal of Tropical Medicine and Public Health 24(2): 369-375
1993
ISSN/ISBN: 0125-1562 PMID: 8266245 Document Number: 406014
The dengue vectors Aedes aegypti and A. albopictus were surveyed within the city of Manila, Philippines from August 1985 to July 1987. Survey techniques included ovitraps, indoor resting collections, Fay traps, and larval surveys. Aedes aegypti was the principal container breeder within the residential areas, while A. albopictus predominated in cemeteries. The ovitrap was very effective in detecting the presence of A. aegypti, but not in measuring population changes during the year. Indoor resting and Fay traps show a low population of A. aegypti from February through May, during the dry season, and higher populations from June through September, during the rainy season. The most common indoor containers holding larvae were flower vases, while metal or glass containers were the most common outdoors. Dengue transmission appears to be closely related to rainfall, with cases increasing about 2 months following the onset of the rainy season.