Florida Department of Health workers package a urine test, part of the state's effort to provide free Zika tests to pregnant women. Joe Raedle/Getty Images hide caption

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Anti-Zika advice applied to a wall in front of a housing project in the Puerta de Tierras section of San Juan, Puerto Rico. This public health message was part of an island-wide effort to stem the spread of Zika. Angel Valentin/Getty Images hide caption

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Protest signs at the Florida Keys Mosquito Control District board's meeting Saturday in Marathon, Fla. Greg Allen/Greg Allen hide caption

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Greg Allen/Greg Allen

Florida Keys Approves Trial Of Genetically Modified Mosquitoes To Fight Zika

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Joseph Blackman, a Miami-Dade County mosquito control inspector, at work in Miami. Mosquitoes infected with Zika are now spreading the illness in at least four different parts of the city, according to federal health officials. Joe Raedle/Getty Images hide caption

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Zika May Be In The U.S. To Stay

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Florida Department of Health workers at a temporary clinic set up in Miami Beach in September package up a urine sample to be tested for the Zika virus. Pregnant women in Texas and Florida have complained it can take as long as a month or more to get their Zika test results. Joe Raedle/Getty Images hide caption

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A Florida Department of Health employee processes a urine sample to test for the Zika virus on Sept. 14 in Miami Beach. Lynne Sladky/AP hide caption

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Lynne Sladky/AP

Reporter's Notebook: Pregnant And Caught In Zika Test Limbo

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A pest control worker fumigates a school classroom in Kuala Lumpur on Sept. 4. Malaysia reported its first locally transmitted Zika case on Sept. 3. Mohd Rasfan /AFP/Getty Images hide caption

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Mohd Rasfan /AFP/Getty Images

Does Asia Have A Secret Weapon Against Zika?

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County mosquito control inspector Yasser "Jazz" Compagines sprays a storm drain in Miami Beach to thwart mosquitoes that spread Zika. Alan Diaz/AP hide caption

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Alan Diaz/AP

POLL: Most Americans Want Congress To Make Zika Funding A High Priority

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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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Toby Talbot/AP

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

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Lenroy Watt talks with residents of Miami's Little Haiti about Zika, leaving brochures in Creole about how to prevent the illness, as well as phone numbers for local mosquito control agencies and the county health department. Courtesy of Planned Parenthood hide caption

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Courtesy of Planned Parenthood

Planned Parenthood Joins Campaign To Rid Miami Neighborhoods Of Zika

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A Miami-Dade County mosquito control worker sprays around a school in the Wynwood area of Miami earlier this month. Alan Diaz/AP hide caption

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Alan Diaz/AP

Miami Schools Take Steps To Protect Returning Students From Zika

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A city worker in San Juan, Puerto Rico, cleans up a vacant lot where mosquitoes could be breeding. Jason Beaubien/NPR hide caption

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Puerto Rico's Efforts To Stop Zika Are Hampered By Mistrust

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A health department pickup truck sprays insecticide against mosquitoes in a San Juan, Puerto Rico, neighborhood in January. Alvin Baez/Reuters hide caption

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Alvin Baez/Reuters

Zika Cases Surge In Puerto Rico As Mosquitoes Flourish

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Surgeon General Vivek Murthy looks at a sample of mosquitoes in Orlando, Fla., on Monday. With him is Department of Health and Human Services Secretary Sylvia Burwell and Orange County Mayor Teresa Jacobs. John Raoux/AP hide caption

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