Goats and Soda

Air conditioners on a building. Scientists say there has been too little research into the role of heating, ventilation and air conditioning systems in the spread of the coronavirus. Sami Sarkis/Getty Images 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

Left: Jana De Brauwere, a contact tracer in California. Right: Rachel Saykpah, a nurse in Liberia who has overseen contact tracers in Africa since 2014. Jana De Brauwere; Rachel Saykpah hide caption

From left: Maria Nakalanda, Edward Arineitwe and Charles Batte are Ugandan health-care workers who've had to rethink their commute after their country announced transportation restrictions. Maria Nakalanda; Edward Arineitwe; Charles Batte hide caption

President Trump at the daily coronavirus briefing on Tuesday, when he declared his intent to halt funding to the World Health Organization; and Tedros Adhanom Ghebreyesus, director-general of the WHO. Alex Brandon/AP; Fabrice Coffrini/AFP via Getty Images hide caption

Countries under coronavirus lockdowns should only ease those restrictions if they can control new infections and trace contacts, the World Health Organization says. Here, Hashim, a health care worker, recently greeted his daughter through a glass door as they maintained social distance due to the COVID-19 outbreak in New Rochelle, N.Y. Joy Malone/Reuters hide caption

Rohingya refugees wait at a relief distribution point in the Kutupalong refugee camp in Bangladesh on March 24. Suzauddin Rubel/AFP 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

The World Health Organization called the COVID-19 viral disease a pandemic Wednesday. Here, workers in Spain place a medical mask on a figure that was to be part of the Fallas festival in Valencia. The festival has been canceled over the coronavirus outbreak. Alberto Saiz/AP hide caption

Chinese volunteers from the nonprofit organization Blue Sky Rescue Team carry fumigation equipment on their way to disinfect common areas of a local residential compound last week in Beijing. Kevin Frayer/Getty Images hide caption

Israel has announced a blanket quarantine policy for anyone entering the country; the policy will be in effect for two weeks. Here, empty airline check-in counters are seen at Ben Gurion Airport, near Tel Aviv. Amir Cohen/Reuters hide caption