Western Equine Encephalitis (WEE), and St. Louis Encephalitis (SLE).The prairie pothole wetlands of North Dakota in the Red River region, during a 1975 epidemic. Culex tarsalis, the principal WEE vector, breed in the stagnant pools. CDC 1975West Nile virus. Using a histochemical technique in processing this tissue specimen, this image reveals the presence of the virus. CDC/ Sherif R. Zaki, MD, PhD, Chief IDPBSt. Louis Encephalitis (SLE). Water collecting in an outdoor Texas statue storage facility became a breeding ground for Aedes aegypti, and Culex quinquefasciatus mosquitoes during a 1964 SLE epidemic. CDC, 1964
Vectors and vector borne diseases: Ecological research and surveillance development in New