How much do we know about the Zika virus? What precautions will athletes need to take in August at the Rio Olympics? There are still many uncertainties.
- Aussie doc: Rio water bigger worry than Zika
- U.S. routs Costa Rica to open Olympic qualifying
- Lord Coe says IAAF won't accept sponsor blow
- Lauren Jackson to decide on Rio Games in March
- USOC to hire specialists to advise on Zika virus
- Blazers' Lillard added to U.S. Olympic roster pool
- Solo considers skipping Olympics over Zika virus