Coronavirus LIVE Updates: US Developing Covid-19 Strain to Deliberately Infect Vaccine Trial Volunteers - Coronavirus Updates

Coronavirus LIVE Updates: US scientists are developing a strain of the coronavirus that could be used to deliberately infect volunteers in so-called "challenge studies," a government agency said Friday. The work is preliminary and the government is continuing to prioritize randomized clinical trials of vaccine candidates, the National Institute for Allergies and Infectious Diseases (NIAID) said.

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