virus nilo occidentale

Virus West Nile: ecco gli interventi per fermarlo a Jesolo
This close-up view of a Culex tarsalis mosquito resting on human skin, shows the dark-scaled proboscis which has a broad median white band. ....Other identifying characteristics include white scales around the joints of its tarsi, a line of white scales along the tibia and femur, and two silver dots on its scutum. The epidemiologic importance of C. tarsalis lies in its ability to spread Western Equine Encephalitis (WEE), St. Louis Encephalitis (SLE), and California Encephalitis, and is currently the main vector of West Nile virus in the Western United States... ..Date: 2005..Content credits: / xxxxx..Photo credit: James Gathany..Image storage: xxxxxxxxxxxxx..Support File: CD_120_DH/ 005....URL: http://www.cdc.gov/ncidod/dvbid/westnile/..URL Title: CDC – Division of Vector-Borne Infectious Diseases – West Nile Virus.. - LA ZANZARA CULEX A sinistra, l'insetto identificato come principale vettore del virus A destra, una cellula infettata