Malaria has been spread by mosquitos locally in the U.S. for the first time in 20 years, per a Centers for Disease Control and Prevention alert issued Monday.
Driving the news: Four people in Sarasota County, Florida, and a person in Cameron County, Texas, contracted the potentially deadly disease over a period from late May to late June through local transmission, according to the CDC. "All patients have received treatment and are improving," per a CDC statement.
