COVID-19 vaccines from COVAX, the international vaccine-sharing program, arrive in Khartoum, Sudan, on Aug. 5. In a letter to President Biden, health experts are asking him to take action to manufacture and distribute vaccines to the entire world. Ebrahim Hamid/AFP via Getty Images hide caption
Nurses feed newborn babies rescued and brought to Ataturk National Children's Hospital in Kabul, Afghanistan, on May 15, 2020, after their mothers were killed in an attack on a maternity ward operated by Doctors Without Borders. The health-care nonprofit runs clinics and hospitals in various parts of the country. Wakil Kohsar/AFP via Getty Images hide caption
A mask is still an important protective measure for both the unvaccinated and the vaccinated. A new study looks at the best ways to encourage folks to mask up. Ian Morton/NPR hide caption
COVID-19 patients receive treatment at the St. Luke Foundation for Haiti hospital in Port-au-Prince, Haiti, on July 16. The country received its first shipment of COVID-19 vaccine doses that month. Ricardo Arduengo/Reuters hide caption
Performing last rites before the cremation of a family member who died of COVID-19. Anupam Nath/AP hide caption
Staffers distribute the required personal protective gear before they transfer a COVID-positive patient to a hospital. They'll wear a gown, gloves, mask and face shield. Ashley Westerman/NPR hide caption
Shakuntala Thilsted, winner of the 2021 World Food Prize, is one of the world's leading experts on the nutritional benefits of small fish. Finn Thilsted hide caption
Dr. Eugene Richardson in a helicopter during the Ebola outbreak in Sierra Leone, where he worked as a clinical lead for Partner in Health's response to the outbreak. He is the author of the new book Epidemic Illusions: On the Coloniality of Global Public Health. Katie Barron hide caption
When it's cold outside, is it safe to bring a socially distanced gathering into your house if the windows are open for a short bit and then shut so indoor temperatures don't plummet? We answer this question below. Tessa Bunney/Corbis via Getty Images hide caption
Air passengers wearing practically full-body coveralls at the Netaji Subhas Chandra Bose International Airport in India. Dibyangshu Sarkar/AFP via Getty Images hide caption
Joan Garcia became pregnant at 14 and gave birth at 15. She and her child travel by raft between the two shacks where they live in Navotas fish port on Manila Bay. Hannah Reyes Morales for NPR hide caption
A fan wears a neck gaiter as he watches the Los Angeles Dodgers play at home against the San Francisco Giants last week. Gina Ferazzi/Los Angeles Times via Getty Images hide caption
In 2014, Martha Phillips, an American nurse, traveled to West Africa during the Ebola crisis to provide medical care. Treating Ebola not only taught her how to stay safe around a deadly virus but also how to manage the stress and sadness of working during a disease outbreak. She's now drawing on that experience to help other nurses cope with the challenges of coronavirus. Martha Phillips hide caption
People with protective masks walk in front of the Eiffel Tower in Paris on March 9. The new coronavirus has had an impact on international travel. Mehdi Taamallah/NurPhoto via Getty Images hide caption
An office worker is screened with an infrared thermometer as he enters a building in New Delhi, India. Prashanth Vishwanathan/Bloomberg via Getty Images hide caption
A scene from the Moria refugee camp on the island of Lesbos, Greece, in January. Angelos Tzortzinis/dpa/Picture Alliance via Getty Images hide caption
Police officers wear face masks Wednesday in front of a hotel on Tenerife, the largest of Spain's Canary Islands. Spanish officials say a hotel on the island has been placed under quarantine after an Italian doctor staying there tested positive for the new coronavirus. AP hide caption
Workers in Pyongyang produce masks for protection against the new coronavirus. Experts say North Korea's track record of fighting epidemics does not bode well for its handling of the coronavirus outbreak. Kim Won-Jin/AFP via Getty Images hide caption
A girl in a park in Beijing on Feb. 15. Researchers are looking at the impact of the newly identified coronavirus on children. Wang Zhao /AFP via Getty Images hide caption
President Trump and Chinese President Xi Jinping attend a bilateral meeting on the sidelines of the G20 Summit in Osaka last June. The two leaders spoke by phone earlier this month. Since the coronavirus outbreak, China has let in some experts from the World Health Organization but has not yet allowed in a team from the U.S. Centers for Disease Control and Prevention. Brendan Smialowski/AFP via Getty Images hide caption
Travelers wearing face masks walk along a concourse at Beijing Capital International Airport on Thursday. American schools are advising students to avoid travel to China, and some are working to evacuate students already there. China reported nearly 11,800 confirmed coronavirus cases on Friday. Mark Schiefelbein/AP hide caption