Pneumonic plague is both “the least common and most dangerous type of plague,” according to the Cleveland Clinic.

CHICAGO (WLS) -- Health officials in Illinois will give an update Friday on measles cases in the state. Officials say there are currently 10 measles cases in Illinois as they are asking clinicians to ...

An Arizona resident has died from pneumonic plague, a severe lung infection caused by Yersinia pestis. The CDC warns that plague can be fatal if untreated.

The sample with the measles virus was collected on July 7. Utah health officials confirmed the result on July 11.

Haywood County Health and Human Services confirmed six cases of pertussis, also known as whooping cough, in children and teens under the age of 19 in Haywood County.