Palestinian girls read the Koran at a camp in Gaza City, June 2012. In poor countries, boys are 20 percent more likely than girls to enroll in school, UNICEF says. Mahmud Hams/AFP/Getty Images hide caption

toggle caption Mahmud Hams/AFP/Getty Images

Young boys suspected of having Guinea worm infections wait for the parasite to emerge through the skin at a clinic in South Sudan. Louise Gubb/The Carter Center hide caption

toggle caption Louise Gubb/The Carter Center

Yonta, 6, rests with her brother Leakhena, 4 months, under a mosquito bed net in the Pailin province of Cambodia, where deaths from malaria have decreased sharply in the past two decades. Paula Bronstein/Getty Images hide caption

toggle caption Paula Bronstein/Getty Images

Why Ending Malaria May Be More About Backhoes Than Bed Nets

  • Download
  • <iframe src="https://www.npr.org/player/embed/257627285/259370627" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Timothy Webb and other advocates protest the cost of HIV drugs manufactured by the pharmaceutical company Gilead outside an AIDS conference in Atlanta in March. Gilead is making a new hepatitis C drug, Sovaldi. John Amis/AP Images for AIDS Healthcare Foundation hide caption

toggle caption John Amis/AP Images for AIDS Healthcare Foundation

$1,000 Pill For Hepatitis C Spurs Debate Over Drug Prices

  • Download
  • <iframe src="https://www.npr.org/player/embed/256885858/258301793" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Sun, shopping and chikungunya? A nasty virus has sickened 10 people on the island of St. Martin in the past few months. Balalaika/iStockphoto hide caption

toggle caption Balalaika/iStockphoto

A mother waits with her child at an HIV clinic in Nyagasambu, Rwanda, in February 2008. The clinic was built with a grant from the President's Emergency Plan for AIDS Relief initiative. Shashank Bengali/MCT /Landov hide caption

toggle caption Shashank Bengali/MCT /Landov

How The U.S. Helped Fight The Global AIDS Epidemic

  • Download
  • <iframe src="https://www.npr.org/player/embed/251950362/252006908" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

There's no evidence that triclosan and other chemicals in antibacterial soaps do a better job than plain soap and water, the FDA says. Kiichiro Sato/AP hide caption

toggle caption Kiichiro Sato/AP

A polio worker vaccinates a child in Khyber-Pakhtunkhwa province, Pakistan, in October. Arshad Arbab/EPA/Landov hide caption

toggle caption Arshad Arbab/EPA/Landov

They Shot For Zero, But Couldn't Squash Polio In 2013

  • Download
  • <iframe src="https://www.npr.org/player/embed/251109427/251284704" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

The chikunguyna virus was discovered in 1955 by two scientists in Tanzania. EMDataBank using UCSF Chimera hide caption

toggle caption EMDataBank using UCSF Chimera

Children get tested for malaria at a clinic near the Myanmar border in Sai Yoke, Thailand. Drug-resistant strains of the parasite have appeared in the region over the past few years. Surkree Sukplang/Reuters /Landov hide caption

toggle caption Surkree Sukplang/Reuters /Landov

The interior of the nose is like a lush rain forest that's barely been explored. Courtesy of Sunje Pamp hide caption

toggle caption Courtesy of Sunje Pamp

The Ivy League school has begun vaccinating nearly 6,000 students to try to stop an outbreak of type B meningitis in an unusual federal government-endorsed administration of a drug not generally approved for use in the U.S. Mel Evans/AP hide caption

toggle caption Mel Evans/AP

A colorized closeup of the hepatitis C virus. James Cavallini/Science Source hide caption

toggle caption James Cavallini/Science Source

FDA Expected To Approve New, Gentler Cure For Hepatitis C

  • Download
  • <iframe src="https://www.npr.org/player/embed/248934833/248935208" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Administrators at University of California, Santa Barbara are encouraging fraternities and sororities to hold off on parties. Damian Gadal/Flickr hide caption

toggle caption Damian Gadal/Flickr