Plague
A plague was an outbreak of an infectious disease that affected people over an extensive geographical area, otherwise known as a pandemic. There were also specific infectious diseases that were given the name plague.

In 2266, Leonard McCoy concurred that a plague might explain the death of the grups on . ()

The term plague could also be used to describe any other widespread, unpleasant phenomenon. In 2270, James T. Kirk described the spate of practical jokes aboard  in his log as plaguing their crew. ()

Types of plagues
 Boranis III plague ()
 Botanical plague ()
 Bubonic plague ()
 Cartalian fever ()
 Dramia II plague ()
 Klingon augment virus ()
 Ornaran plague ()
 Phyrox plague ()
 Plasma plague ()
 Rigelian fever ()
 Rudellian plague () 
 Tarellian plague ()
 Telurian plague  ( and )
 Teplan blight ()
 Terrellian plague ( and )
 Tribbles (according to Worf) ()

See also
 Circassian plague cat

External links 
 

de:Pest
Medical conditions