August 14, 2020

US developing coronavirus strain for human ‘challenge’ trials

Washington (AFP) – 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.Several of these have entered their final stages, including the vaccines developed by Moderna, Pfizer and AstraZeneca.But NIAID has nonetheless “begun efforts to manufacture a strain that could be used to devel…


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