A study of Malayan filariasis in Lubuk Mumpo and Data Lebar villages in Lais Regency, North Bengkulu, Sumatera, Indonesia.
Filariasis surveys in the villages of Lubuk Mumpo and Datar Lebar, Bengkulu, Sumatera, Indonesia, in 1981-82 showed that 23.9- 30% of the persons examined were infected with nocturnally periodic Brugia malayi, with a periodicity index of 82.17; no other filariae were detected in the villagers. However, unlike the Malayan form of periodic B. malayi, 44-100% of the microfilariae in thick blood smears were sheathed. Of the 22 mosquito species collected in the 2 villages, it appears that those most likely to be involved in transmission are Mansonia annulata Leic., M. bonneae Edw., M. dives (Schin.), M. uniformis (Theo.) and Anopheles nigerrimus Giles. Infection with B. malayi was found in 7.1% of the domestic cats and 20% of the examples of Macaca fascicularis examined.<new para>ADDITIONAL ABSTRACT:<new para>Surveys of the human population of the 2 villages showed 24% and 30% respectively to have microfilariae of nocturnally periodic Brugia malayi; 4 species of Mansonia and 1 species of Anopheles are probable vectors. B. malayi infections were found in 2 of 28 cats and 1 of 5 macaques examined. Three of the 5 macaques showed infection with Edesonfilaria malayensis (the first record in Indonesia).newline˜W. Crewe