A Century-Old Vaccine Fails to Protect Against Covid

Health
By BY RONI CARYN RABIN from NYT Health https://ift.tt/Dd9oKAy
via IFTTT your-feed-science, Coronavirus (2019-nCoV), Vaccination and Immunization, Immune System, Tuberculosis, Clinical Trials Early in the pandemic, scientists began testing an old TB vaccine against the coronavirus. But the trial enrolled fewer participants than expected as new Covid vaccines were introduced, and no discernible effect was found.

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