Diseases, Conditions, Syndromes

Seven things to know about polio

New York state health officials warned last week that hundreds of people may have been infected with the polio virus, based on recent wastewater testing in different counties within New York state.

Neuroscience

Video: Immune system attacks brain-eating amoeba

Naegleria fowleri—commonly known as "the brain-eating amoeba"—can be found in warm fresh water. It's a single-celled, free swimming animal that reaches the brain through the nasal passageway by traveling up the olfactory ...

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