Cover image Eastern equine encephalitis virus. Coloured transmission electron micrograph (TEM) of eastern equine encephalitis (EEE) virus particles (Alphavirus sp., yellow) in the salivary gland of a mosquito. The virus is an arbovirus (arthropod-borne virus) and is transmitted to humans, birds, and horses through the bite of an infected mosquito.

Credit C J Guerin, PhD, MRC Toxicology Unit / SPL