

A scientist works on COVID-19 samples to find variations of the virus at the Croix-Rousse Hospital laboratory in Lyon, France, in January. Jeff Pachoud/AFP via Getty Images hide caption
Thulja Hurkchand as a young woman and with her son Hitesh. She'd tell him, "Don't worry. It's going to be okay. I'm going to be okay." Yet in the face of the pandemic, he couldn't help but worry. Family Photos hide caption
World Health Organization Director-General Tedros Adhanom Ghebreyesus was one of many global health leaders who spoke bluntly about the coronavirus pandemic at annual meetings that conclude on Tuesday. Discussing the lack of priority given to vaccines for poor countries, he stated, "The world is on the brink of a catastrophic moral failure." Fabrice Coffrini/AFP via Getty Images hide caption
Chinese travelers at a railway station in Beijing, China, wear face masks to protect themselves from the new coronavirus on Jan. 21, 2020. The virus was first identified in Wuhan, China, in Dec. 2019, and since then has quickly spread worldwide. Kevin Frayer/Getty Images hide caption
An older sister in Kenya carries her baby sibling. A new study looks at the impact of a big sister's caregiving. Wendy Stone/Corbis via Getty Images hide caption
A 19-year-old woman talks with nurse Valeria Zafisoa at a traveling contraception clinic in eastern Madagascar run by the British nonprofit group Marie Stopes International. Samantha Reinders for NPR hide caption