FILARIASIS STUDIES IN THE REPUBLIC OF THE PHILIPPINES
Technical Report,01 Oct 1966,31 Oct 1967
PHILIPPINES UNIV MANILA MANILA Philippines
Pagination or Media Count:
A total of 3.695 persons were examined for microfilaremia with 120 found positive or a prevalence rate of 3.2 per cent. Out of these 120 positives 91 or 76 per cent were W. bancrofti and 29 or 24 per cent were B. malayi filariasis. Tawi-Tawi group of islands particularly Bongao municipality became the second endemic focus for malayan filariasis in the Republic of the Philippines. The first one is in Quezon municipality, Palawan Province as reported in 1964. As expected the microfilaremia rates in males was higher than in females in practically all ages and in all municipalities found endemic for the disease. The higher the endemicity of filariasis in an area, the closer the prevalence rates between sexes and the lower the endemicity the higher the prevalence rates of males over females. This condition is probably due to occupational exposure risks. Malayan filariasis in Southern Sulu appeared to have been introduced relatively quite recent as compared to that found in Palawan Province. The microfilariae exhibited the nocturnal subperiodic behavior similar to the malayan filariasis found in Palawan. There is that trend of increasing W. bancrofti microfilaremia rates in islands with large areas of farm land planted with abaca, with Aedes Finlaya poecilus as the vector mosquito. However, in areas where abaca is absent filariasis may also be absent or if present the prevalence rate is low. Anopheles minimus flavirostris is the vector in abaca-free areas.
- Medicine and Medical Research