A researcher at Protein Sciences moves a vial in a lab, Thursday, March 12, 2020, in Meriden, Conn. The biotech company is currently researching a vaccine for COVID-19. For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. The vast majority of people recover from the new virus. (AP Photo/Jessica Hill)
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