Many potential drug cures remain in the laboratory -- and one treatment won't fit all.
A survivor's blood would be needed to create a treatment for the deadly virus, reports say.
As West African nations handle an outbreak of the deadly Ebola virus, Trace takes a look at preparedness in other nations and assesses the chances of the illness going terrifyingly global.
The California children tested negative for polio, and all had been vaccinated.
A new study shows how regional climate differences controlled the intensity of outbreaks of plague in China.
The recent outbreak of mass hysteria at a school in Upstate New York is not that unique.