Covishield is the brand name used for the Oxford-AstraZeneca COVID-19 vaccine manufactured in India's Serum Institute, administered to millions of people, mostly in low- and middle-income countries. It's not on the list of approved vaccines for the European Union — although the AstraZeneca version made in the United Kingdom and at European sites is. Ishara S. Kodikara/AFP via Getty Images hide caption
A Pakistani shopkeeper cleans toilets on display inside his shop in Lahore. ARIF ALI/AFP via Getty Images hide caption
The challenge of refrigerating COVID-19 vaccines is acute in sub-Saharan Africa, where only 28% of health care facilities have reliable power. Jason Beaubien/NPR hide caption
On June 25, people queued up to register for a COVID-19 vaccine at a site outside a Hindu temple in Hyderabad. Vaccinations are now being administered after a series of missteps led to a shortage of doses. If all goes well, India's public health agency hopes to be vaccinating up to 10 million people a day by late July. Noah Seelam/AFP via Getty Images hide caption
A computer-enhanced image of the HIV virus. Callista Images/Getty Images/Image Source hide caption
A woman receives a COVID-19 test Monday at a testing station in Nelson Bay, Australia. Mark Baker/AP hide caption
Terence Crowster, who has been an avid reader since he was young, solicited donations to start the Hot-Spot Library in Scottsville, Cape Town, so kids would have a safe place to connect with books. Tommy Trenchard for NPR hide caption
Students work on a classroom exercise at a school in Kibera, a poor neighborhood in Nairobi, Kenya. Tony Karumba/AFP via Getty Images hide caption
A sign urges people to get tested for a COVID-19 variant in Blackburn, England. The U.K. is experiencing a surge in the delta variant, which was first identified in India. Oli Scarff/AFP via Getty Images hide caption
People line up in their cars to get tested for COVID-19 at a pop-up testing clinic at Bondi Beach in Sydney on Friday. Parts of Sydney will go into lockdown late Friday because of a growing coronavirus outbreak in Australia's largest city. Dean Lewins/AP hide caption
This photomicrograph depicts Leishmania donovani parasites contained within a canine bone marrow cell. One of the more dangerous of 20 different species of Leishmania, L. donovani is endemic to parts of India, Africa, and South-West Asia. Dr. Francis W. Chandler/CDC hide caption
An oxygen cylinder plant in Kampala, Uganda. The Ugandan army has started producing oxygen for state-run hospitals to ease the burden existing plants as COVID-19 cases — and demand for oxygen for severe illness — keep rising. Nicholas Kajoba/Xinhua News Agency via Getty Images hide caption
Gloria Majiga-Kamoto, an activist from Malawi, is one of six recipients of the 2021 Goldman Environmental Prize. Majiga-Kamoto has been instrumental in implementing Malawi's ban on thin plastics. Goldman Environmental Prize 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