There were no confirmed Zika infections among athletes or visitors in Brazil during the 2016 Summer Olympics, but a new University of Utah Health study has found that many U.S. athletes and staff came down with other serious mosquito-borne illnesses on their trip.
Some 457 U.S. Olympic and Paralympic athletes and staff — out of an estimated 2,000 American athletes and staff who attended — provided blood samples to U. researchers after returning from the South American nation.
Thirty-two of them had contracted mosquito-borne viruses. Some 27 had West Nile virus, three picked up chikungunya and two contracted dengue fever, the study found.