Search for a COVID-19 vaccine heats up in China, US

  • Jennifer Haller, the first patient to receive a vaccine shot in the first-stage safety study clinical trial of a potential vaccine for COVID-19, the disease caused by the new coronavirus, poses for a portrait before going into the Kaiser Permanente Washington Health Research Institute to get her second dose of the vaccine, Tuesday, April 14, 2020, in Seattle. Three potential COVID-19 vaccines are making fast progress in early-stage testing in volunteers in China and the U.S., but it’s still a long road to prove if they’ll really work. (AP Photo/Ted S. Warren)

WASHINGTON — Three potential COVID-19 vaccines are making fast progress in early-stage testing in volunteers in China and the U.S., but it’s still a long road to prove if they’ll really work.

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