The World Health Organization anticipates that the Zika virus will spread to all but two countries in South, Central and North America. The mosquito-borne disease has raged in South America and other regions for several months.(CNN) "Dr Chan: Although a causal link between #Zika in pregnancy & microcephaly has not been established, the circumstantial evidence is worrisome" Dr Chan: I thank all affected countries for detecting [#Zika] quickly, promptly & transparently notifying WHO in line w/ Intl Health Reg
