As the Rio Olympics draw closer, more athletes are refusing to participate because of Zika virus concerns. The chance of catching the disease is low, and the World Health Organization declared the Games will be safe, but many athletes aren't about to the risk.
Serena Williams will compete and says she is sad so many fellow athletes will not.
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"But at the same time I obviously understand where they're coming from and how they feel," she told Tuesday, Yahoo Sports.