The mosquitos that can carry the Zika virus have reportedly appeared in 129 California cities. With cold winter weather the only major obstacle to the Zika virus becoming America's first pandemic since the 1957 Asian Flu, ground zero for a potential pandemic is now the West Coast. The California Department of Public Health released an emergency warning on March 31 that two invasive (non-native) mosquito species named Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito), which are known to carry Zika, dengue, chikungunya and yellow fever, have now been found in 10 California counties including Fresno, Kern, Imperial, Los Angeles, Madera, Orange, Riverside, San Bernardino, San Mateo and Tulare. Unlike most of California's native mosquito species, Aedes aegypti and Aedes albopictus only bite during the daytime. They are distinguished by their small size, and by their black and white stripes on their back and legs. Aedes aegypti and Aedes albopictus are