NOT SO GOOD: Florida teen first human case of mosquito-borne Keystone virus.

University of Florida researchers describe the case of a teenage boy who went to an urgent care clinic in North Central Florida with a rash and fever in August 2016, during the Zika virus epidemic in Florida and the Caribbean.

Tests on the patient were negative for Zika or related viruses, but did reveal Keystone virus infection, according to the study published June 9 in the journal Clinical Infectious Diseases.

“Although the virus has never previously been found in humans, the infection may actually be fairly common in North Florida,” said corresponding author Dr. J. Glenn Morris. He is director of the university’s Emerging Pathogens Institute.

I’m not so crazy about “emerging pathogens.”