A mysterious and sometimes fatal brain disease that has afflicted children in northeastern India for years could be linked to a toxic substance in litchi fruits, US researchers said Thursday.
Health officials are now focused on ending the biggest-ever Ebola outbreak rather than just slowing the deadly virus' spread, the World Health Organization said Thursday.
Nigeria on Thursday confirmed that the H5N1 strain of bird flu has spread from seven to 11 states within a week, resulting in the deaths of tens of thousands of poultry but no human cases.
US doctors on Thursday reported 12 cases of muscle weakness or paralysis among children in Colorado that may be linked to a nationwide outbreak of an usually rare respiratory virus.
The first results from a trial of a candidate Ebola vaccine at Oxford University suggest the vaccine has an acceptable safety profile at the doses tested, and is able to generate an immune response.