Cases of dengue fever have been popping up in Key West, Fla., but not Tucson, Ariz., despite the two cities having similar mosquito populations, and their residents spending similar amounts of time outdoors. Researchers are trying to figure out why.
Cases of dengue fever have been popping up in Key West, Fla., but not Tucson, Ariz., despite the two cities having similar mosquito populations, and their residents spending similar amounts of time outdoors. Researchers are trying to figure out why.