Mosquitoes in traps are transported back to the county's laboratory for analysis. Carrie Feibel/Houston Public Media hide caption

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Mosquito Hunters Set Traps Across Houston, Search for Signs of Zika
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Aedes aegypti mosquito photographed through a microscope. Felipe Dana/AP hide caption

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CDC: 157 Pregnant Women In The U.S. Have Tested Positive For Zika
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A mosquito control inspector sprinkles larvicide in a storm drain in Miami Gardens, Fla., in an effort to stop the spread of Zika virus. Joe Raedle/Getty Images hide caption

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Health Departments Cut Programs While Awaiting Zika Funding
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In some parts of the country, this might require bug spray. Steven Errico/Getty Images hide caption

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Who Should Be Worried About Zika And What Should They Do?
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Kelli Glenn holds a photo of her father while he was in the hospital. Meredith Rizzo/NPR hide caption

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Suddenly Paralyzed, 2 Men Struggle To Recover From Guillain-Barre
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Angelica Pereira feeds her daughter Luiza, who was born with microcephaly, at her mother's house in Santa Cruz do Capibaribe, Brazil. Felipe Dana/AP hide caption

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Zika Virus Can Cause Brain Defects In Babies, CDC Confirms
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Nadja Bezerra carries her 4-month-old daughter, Alice, who was born with microcephaly, in Recife, Brazil. Dado Galdieri/Bloomberg via Getty Images hide caption

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How To Fight Zika When Your Country Is In Trouble: Improvise
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Standing water and abandoned tires make Houston's Fifth Ward hospitable for mosquitoes. Courtesy of Anna Grove Photography hide caption

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Houston Prepares Now For Zika's Potential Arrival This Summer
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A medical researcher prepares tests for various diseases including Zika. Arnulfo Franco/AP hide caption

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How Best To Test For Zika Virus?
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Mariel Mohns and Mustafa Rasheed are working in a University of Wisconsin lab that's trying to figure out how Zika virus could be damaging fetuses. Courtesy of Kristi L. Hall hide caption

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Scientists Report In Real Time On Challenging Zika Research
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A woman who is six months pregnant shows a photo of her ultrasound at the IMIP hospital in Recife, Pernambuco state, Brazil, on Wednesday. Scientists are trying to figure out how Zika virus may be affecting fetuses. Felipe Dana/AP hide caption

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Study Finds Multiple Problems In Fetuses Exposed To Zika Virus
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The mosquito Aedes aegypti is a spreader of Zika virus. Jeffrey Arguedas/EPA hide caption

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New Study Makes The Case For A Zika Virus Link To Guillain-Barre
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Lindomar Pena, a virologist at a lab in Recife, Brazil, holds a box of vials used to store samples of the Zika virus in huge freezers. Catherine Osborn/For NPR hide caption

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Reporting On The Zika Virus Means Getting Up Close And Personal
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Mosquito larvae fill the cup of stale water that entomologist Luis Hernandez dips from a stack of old tires in a suburb of San Juan, Puerto Rico. Greg Allen/NPR hide caption

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Puerto Rico Races To Stop Zika's Mosquitoes Before Rains Begin
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Researcher Beatriz Parra Patino (right) prepares to test the blood and urine of patients with Guillain-Barre syndrome to see if they had Zika virus as well. She's been working seven days a week, up to 14 hours a day, to test samples as quickly as possible. Becky Sullivan/NPR hide caption

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The Answer To A Zika Mystery Could Lie In Test Tubes In Colombia
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Why Scientists Hope To Inject Some People With Zika Virus
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Marcia Andrade, an agent from Brazil's Ministry of Health, interviews Camila Alves, 22. A friend holds Alves' 2-month-old daughter. Catherine Osborn for NPR hide caption

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Disease Detectives In Brazil Go Door-To-Door To Solve Zika Mystery
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Protected from bites by a mosquito net, this pregnant woman, in her second trimester, came into the hospital in Cucuta, Colombia, with symptoms of Zika. A blood test is being run to find out if she has the virus. Nurith Aizenman/NPR hide caption

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All Eyes Are On Colombia: Will Zika Trigger A Spike In Microcephaly?
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These people have just walked across the bridge from Venezuela to Colombia, where the Colombian immigration authorities are on duty. Many people live on one side and work on the other, crossing so frequently they don't have to register with officials each time. Vladimir Solano for NPR hide caption

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Venezuela Won't Talk To Colombia About Zika — And That's A Problem
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Ebola virus particles (blue) emerge from a chronically infected African green monkey cell. NIAID/Flickr hide caption

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'Pandemic' Asks: Is A Disease That Will Kill Tens Of Millions Coming?
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