Keystone Virus Makes First Known Jump From Mosquitoes To Humans

A Miami-Dade County mosquito control worker sprays around a home in August 2016 in the Wynwood area of Miami. A University of Florida study recently identified the first known human case of the mosquito-borne Keystone virus.

Updated at 10:45 a.m. ET Friday

Just in time for the hot, humid, bug-bite-riddled summer: Researchers from the University of Florida have confirmed the first known case of a human infected with the mosquito-borne Keystone virus.

A 16-year-old boy in North Central Florida went to an urgent care clinic after coming down with a fever and a severe rash in August 2016, during the Zika outbreak in Florida and the Caribbean.