The FDA says that facilities that collect blood donations throughout the United States should be testing donations for Zika within 12 weeks. Toby Talbot/AP hide caption

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All U.S. Blood Donations Should Be Screened For Zika, FDA Says

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People wait in line to donate blood at the OneBlood Donation Center in Orlando, Fla, on Sunday, after a mass shooting at a gay nightclub left at least 50 people dead and 53 injured. Gerardo Mora/Getty Images hide caption

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Gay and bisexual men were banned from donating blood over concern that HIV could contaminate the blood supply. Vesna Andjic/Getty Images hide caption

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FDA Lifts Ban On Blood Donations By Gay And Bisexual Men

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James Harrison was recognized in 2003 with the Guinness World Record for the most blood donated by one person. DAVID GRAY/Reuters /Landov hide caption

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'Man With The Golden Arm' Donates Blood That Has Saved 2 Million Babies

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Several countries, including Australia, Japan and Great Britain, already encourage blood donations from some gay men. Kevin Curtis/Getty Images/Science Photo Library hide caption

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FDA Considers Allowing Blood Donations From Some Gay Men

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