Proteins in the two most common types of flu virus enable them to take very different paths to entering human lungs, a finding that could lead to more directed antiviral treatments.

As Ebola, Hantavirus, Nipah and other diseases re-emerge, epidemiologist Dr Lalit Kant explains how deforestation, ...

Necropsy reports from sloths imported by a planned Orlando tourist attraction document stressed animals riddled with bacteria ...