Cover image Brain inflammation (meningoencephalitis). Coloured transmission electron micrograph (TEM) of several Naegleria fowleri protozoan microbes (yellow) in the brain. A blood vessel is seen running from bottom right to centre left with red blood cells (red) and white blood cells (pale blue). N. fowleri caused the meningoencephalitis, which is the inflammation of the brain and its membranes.

Credit London School of Hygiene & Tropical Medicine/SPL