XXXX in Sierra Leone. I. Studies on the prevalence and transmission at Gbaiima village.

@entity1 @entity7289 @entity1939 @entity272 @entity855
A longitudinal survey--parasitological, clinical, immunological and @entity7289 is being conducted in Gbaiima village in Sierra Leone. The estimated Annual Transmission Potential ( @entity855 ) is 5863. More than 80% of the annual transmission occurs between October and December. Four species of the Simulium damnosum complex are known to breed in a nearby river. The relative role of these species as vectors has yet to be determined. The total population (598 @entity1 ) aged one year and over were examined. Based on microfilarial and nodular rates the prevalence of @entity7289 was 68.6%. In @entity1 above 15 years of age this prevalence was 88.9%. Microfilarial and nodular rates were related to age. Severe @entity272 occurred in 1.0% of @entity1 . 24 adults (7.5%) were blind (but the cause of the @entity1939 was not determined).
