| prevalence of bancroftian filariasis in the city of puerto limón and the province of limón, costa rica. | examination of blood from randomly selected residents in four subdivisions of puerto limón, costa rica, demonstrated wuchereria bancrofti infection in 1.8% of 2,879 persons. previous studies in four other subdivisions of the city revealed infection in 2.7% of 2,338 persons. in both studies the microfilaremia rate in males was approximately twice that in females. distribution by race was similar in the two surveys, with microfilaremia in 1% of 1,052 white and 4.1% of 1,286 black residents in the ... | 1983 | 6359909 |
| bancroftian filariasis in puerto limón, costa rica. | in four neighborhoods of puerto limón, a caribbean coastal city in a tropical rainforest area of costa rica, examination of 1-ml samples of night blood from 1,142 randomly selected, and 1,196 associated, persons by the knott and filter-chamber techniques revealed microfilariae of wuchereria bancrofti in about 3% of the 2,338 samples. the frequency of infection was higher in males (3.9%) than in females (1.9%), higher in persons of black (4.1%) than of white (1.0%) race, and highest in persons ag ... | 1977 | 596512 |