Masked and unmasked people make their way through Grand Central Market in Los Angeles, California on June 29, 2021 as World Health Organization (WHO) urges fully vaccinated people to continue wearing masks with the rapid spread of the Delta variant. Frederic J. Brown/AFP via Getty Images hide caption
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
Moderna says recently completed studies have found its vaccine to have a neutralizing effect against all COVID-19 variants tested, including the delta variant. Fred Tanneau/AFP via Getty Images hide caption
Kathleen McAuliffe, a home care worker for Catholic Charities in a Portland, Maine, suburb, helps client John Gardner with his weekly chores. McAuliffe shops for Gardner's groceries, cleans his home and runs errands for him during her weekly visit. Brianna Soukup/Kaiser Health News hide caption
A paramedic with Falck Northwest ambulances treats a man experiencing heat exposure during a heat wave in Salem, Ore. Nathan Howard/AP 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
Juul Labs Inc. will pay $40 million to North Carolina and take more action to prevent underage use and sales, according to a landmark legal settlement announced Monday. Brynn Anderson/AP 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