On Jan. 23, 2020, as the coronavirus spread in China, residents of Wuhan, where it was first identified, donned masks to go shopping. The U.S. didn't officially endorse masks as a preventive measure for the public for a number of weeks. Stringer/Getty Images hide caption
Utah Gov. Spencer Cox signed legislation on Saturday that bans youth from receiving gender-affirming health care. Rick Bowmer/AP hide caption
Thinking about the next pandemic keeps lots of researchers busy. Peter Zelei Images/Getty Images hide caption
Prairie voles mate for life and are frequently used to study human behavior. Todd H. Ahern/Emory University hide caption
An expected change in FDA policy would make it easier for men who have sex with men to donate blood. Toby Talbot/AP hide caption
More than 30 years ago, Johnnie Haire, grounds supervisor at Sunset Gardens of Memory cemetery in Millstadt, Illinois, set up a birdbath and purchased angel figurines for a special garden for deceased children called "Baby Land." He carefully painted each angel a hue of brown. He says he wanted the angels to be Black, like many of the children laid to rest here. Cara Anthony/KHN hide caption
People attend a candlelight vigil on Thursday in memory of Tyre Nichols at the Tobey Skate Park in Memphis, Tenn. Scott Olson/Getty Images hide caption
Prairie voles mate for life and are frequently used to study human behavior. Todd H. Ahern/Emory University hide caption
U.S. Attorney Markenzy Lapointe speaks at a news conference in Miami on Wednesday about a network of nursing school operators, centered in South Florida, who allowed students to buy diplomas without the proper training. D.A. Varela/Miami Herald via AP hide caption
An expected change in FDA policy would make it easier for men who have sex with men to donate blood. Toby Talbot/AP hide caption
More than 30 years ago, Johnnie Haire, grounds supervisor at Sunset Gardens of Memory cemetery in Millstadt, Illinois, set up a birdbath and purchased angel figurines for a special garden for deceased children called "Baby Land." He carefully painted each angel a hue of brown. He says he wanted the angels to be Black, like many of the children laid to rest here. Cara Anthony/KHN hide caption
This image shows purified particles of mpox virus, formerly called monkeypox. Viruses like these can be genetically altered in the lab in ways that might make them more dangerous. NIAID hide caption
A nurse prepares a syringe of a COVID-19 vaccine at an inoculation station in Jackson, Miss., in 2022. An advisory committee for the FDA voted Thursday to simplify the country's approach to COVID vaccination. Rogelio V. Solis/AP hide caption
A nurse enrolls a participant in an HIV vaccine trial in Masaka, Uganda, an African-led project. Luke Dray/Getty Images hide caption
Festival volunteer Erin Petrey pours nonalcoholic martinis during bartender Derek Brown's master class at the Mindful Drinking Fest in Washington, D.C., on Jan. 21. Keren Carrión/NPR hide caption
Gel nail polish is popular for its durability, but needs to dry under a UV light. A new study raises questions about the potential health risks of those devices. StockPlanets/Getty Images hide caption
New guidance calls for lower lead levels in food for babies and children under 2. Lead exposure can be harmful to developing brains. Jeff Greenberg/Universal Images Group via Getty hide caption
Worshipper in front of stained glass windows of Prayer Hall, Nasir-al Molk Mosque, Shiraz, Iran. James Strachan/Getty Images hide caption
George Mink Jr. is a health care outreach worker in Delaware County, Pa. He worries about what will happen when vaccines are no longer paid for by the federal government. (Kimberly Paynter/WHYY) Kimberly Paynter/WHYY hide caption