For people with celiac disease gluten-free food is a must. A new study suggests that a common virus may trigger the onset of the disease. Daniel Acker/Bloomberg/Getty Images hide caption

toggle caption
Daniel Acker/Bloomberg/Getty Images

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

toggle caption
Felipe Dana/AP

Zika Virus Can Cause Brain Defects In Babies, CDC Confirms

  • Download
  • <iframe src="https://www.npr.org/player/embed/474112727/474120964" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Mylene Helena Ferraira of Recife, Brazil, carries her 5-month-old son, David Henrique Ferreira, who was born with microcephaly. She's returning home after a medical visit. Mario Tama/Getty Images hide caption

toggle caption
Mario Tama/Getty Images

CDC Arrives In Brazil To Investigate Zika Outbreak

  • Download
  • <iframe src="https://www.npr.org/player/embed/467374133/467621707" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

While some scientists seek ways to stop the spread of Zika by mosquitoes, others have received new funding from the National Institutes of Health to track the genes and habits of the virus itself. Felipe Dana/AP hide caption

toggle caption
Felipe Dana/AP

Virus Profilers Race To Figure Out What Makes Zika Tick

  • Download
  • <iframe src="https://www.npr.org/player/embed/466015517/466186366" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Aedes aegypti mosquitoes are displayed at an exhibition on Jan. 28 in Brazil. The mosquitoes can be carriers of the Zika virus. Several cases of the virus have spread to Puerto Rico. Mario Tama/Getty Images hide caption

toggle caption
Mario Tama/Getty Images

Puerto Rico Health Official 'Very Concerned' About Zika's Spread

  • Download
  • <iframe src="https://www.npr.org/player/embed/464980582/464995816" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Nancy Writebol, a missionary who recovered from Ebola she contracted in Liberia in 2014, told a reporter last July that she was still experiencing knee pain and hadn't fully regained her energy. Chris Keane/Getty Images hide caption

toggle caption
Chris Keane/Getty Images
Thomas Kuhlenbeck/Ikon Images/Corbis

Wherever You Go, Your Personal Cloud Of Microbes Follows

  • Download
  • <iframe src="https://www.npr.org/player/embed/441841735/442582514" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Scientists think the lone star tick (center) likely transmits Heartland disease to people. And the virus probably also circulates in deer and coyotes. iStockphoto; CDC; iStockphoto hide caption

toggle caption
iStockphoto; CDC; iStockphoto

A blood test developed by Harvard researchers checks for evidence of past infection with more than a thousand strains of virus, from about 200 virus families. The swine flu virus shown here, A/CA/4/09, rarely infects humans. C. S. Goldsmith/CDC hide caption

toggle caption
C. S. Goldsmith/CDC

How Many Viruses Have Infected You?

  • Download
  • <iframe src="https://www.npr.org/player/embed/411469959/412177090" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Augustine Goba (right) heads the laboratory at Kenema Government Hospital in Sierra Leone. He and colleagues analyzed the viral genetics in blood samples from 78 Ebola patients early in the epidemic. Stephen Gire/AP hide caption

toggle caption
Stephen Gire/AP

Could This Virus Be Good For You?

  • Download
  • <iframe src="https://www.npr.org/player/embed/382260897/382588014" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Biologist Rob Knight, co-founder of the American Gut Project, recently moved the project to the University of California, San Diego's School of Medicine. Casey A. Cass/University of Colorado hide caption

toggle caption
Casey A. Cass/University of Colorado