Rudellian plague

From Memory Alpha, the free Star Trek reference.

Rudellian plague is an infectious disease that afflicts Cardassians. The Cardassian colony on Pentath III suffered an outbreak of Rudellian plague in 2372, due to a decline in public health caused by the Klingon-Cardassian War. Several medical relief convoys were sent in response to the epidemic, each escorted by a Federation starship. (DS9: "Rules of Engagement")