According to Reuters, a Sao Paulo-based group found the Olympics would result in 15 Zika infections among foreign visitors, and a separate group at the University of Sao Paulo predicted in a study that the Olympics would cause no more than 16 new Zika infections.
However, U.S. government researchers have estimated that Olympics attendees would raise the risk of spreading Zika through air travel, according to Reuters.
Zika has been linked to microcephaly and other health conditions, prompting the World Health Organization to issue advice in May for Olympic athletes to avoid getting the mosquito-borne virus. WHO has not advocated for canceling the games.
In February, the U.S. Olympics Committee told athletes who were concerned about exposure to Zika to consider skipping the games.
More articles on Zika:
Study: Zika directly infects brain cells, subverts immune system
Infographic: Where in the US have Zika cases been reported? [June 3 update]
Detroit Tigers pitcher contracted Zika during offseason
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