Diversity, distribution and abundance of potential rift valley fever vectors in Baringo County, Kenya

摘要

Rift Valley fever (RVF) is a zoonotic disease that occurs sporadically in form of outbreaks and istransmitted by diverse mosquito species in different geographic regions. Knowledge on diversity,distribution and abundance of RVF vectors is useful for risk assessment of RVF outbreaks. Diversity,distribution and abundance of RVF vectors from four ecological zones in Baringo County were studied.Four potential RVF vectors, namely Mansonia uniformis; Mansonia africana; Culex pipiens and Culexunivittatus were among the 26 species identified. Rift Valley Fever vectors were most abundant inlowlands (85.9%); riverine (9.1%); midland and highland combined (5%). Diversity indices were higherin the riverine (H’=1.65) and midland (H’=1.64) than lowland (H’=1.429) and highland (H’=1.229). Area–specific vector distribution and abundance data generated from this study can be incorporated into thenational RVF contingency Plan as part of an improved preparedness and early response to RVFoutbreaks.