SINGLE-DOSE Johnson & Johnson vaccines may be less effective against the highly contagious Delta variant of coronavirus, according to a newly published study, and health experts have warned it might be time to consider booking a second jab.
Thursday, 22 July 2021
Delta variant warning: Troubling sign you'll need second dose of Johnson & Johnson vaccine
SINGLE-DOSE Johnson & Johnson vaccines may be less effective against the highly contagious Delta variant of coronavirus, according to a newly published study, and health experts have warned it might be time to consider booking a second jab.
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