See: Korean haemorrhagic fever.
mexican typhus, infection with rickettsia typhi (mooseri) causing a syndrome similar to epidemic typhus, but spread from rats to man by the rat flea (xenopsylla (polyplax) cheopis). Spread from rat to rat by the rat louse (Polyplax spinulosa). Most common form of typhus in the united state. It has various geographical names based on region in which it was observed.