19-08-2021, 02:51 PM
US: Third dose beginning 20 September to those inoculated at least eight months ago
19-08-2021, 03:22 PM
6 months later, may need 4th jab...likely new jab is required every few months.
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19-08-2021, 04:06 PM
looks like the first 2 jabs hv lost their efficacies
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