PARIS (Reuters) - The spread of bird flu to an increasing number of species and its widening geographic reach have raised the risks of humans being infected by the virus, the head of the World ...

Add Yahoo as a preferred source to see more of our stories on Google. Over 7,000 cases of the mosquito-borne Chikungunya virus have been reported in China since July. The Chinese government is now ...

Signs of recent bird flu infection were found in three US veterinarians, two of whom had no known prior exposure, researchers said, suggesting potentially wider spread of the dangerous virus than has ...

Experts expect more cases to surface in European countries because of frequent travel to and from Africa, with the threat of contracting the disease raised from “very low” to “low.” By Lynsey Chutel ...