Julie Steenhuysen CoronavirusJ&J says vaccine 66 per cent effectiveJohnson & Johnson says its single-dose vaccine was 66 per cent effective in preventing COVID-19 in a large trial against multiple variants... January 30, 2021 | Julie Steenhuysen
CoronavirusJ&J says vaccine 66 per cent effectiveJohnson & Johnson says its single-dose vaccine was 66 per cent effective in preventing COVID-19 in a large trial against multiple variants... January 30, 2021 | Julie Steenhuysen
