The Centers for Disease Control and Prevention is now running tests on six forgotten vials of smallpox recently discovered in an unsecured laboratory.
The medical charity Doctors Without Borders reports that the scale of the epidemic is unprecedented.
A study of thousands of blacklegged ticks showed that the tiny arachnids would more often than expected deliver two diseases at once.
The CLARITY technique is being used to image donated, postmortem brains from people with autism or epilepsy.
The state of California says its cases of whooping cough have reached epidemic proportions. What is whooping cough, and what's causing so many instances of it to crop up?
Dig reveals bodies covered with a thick layer of lime, three kilns where the lime was made, and evidence of a giant bonfire containing human remains.
A mysterious disease that is turning sea stars to goo has taken off along the Oregon coast, with up to half or more of the creatures being infected in just the last few weeks.
Research out of the U.K. raises the possibility of doing an end-run mitochondrial defects that can harm babies by swapping out the "broken" mitochondria for healthy ones from another woman.
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