New CDC study finds that Covid vaccine effectiveness is 60%, two to four weeks after injection for 12 to 15 year olds. Effectiveness drops to 20% by month 2 and effectively zero by month 3.
New CDC study finds that Covid vaccine effectiveness is 60%, two to four weeks after injection for 12 to 15 year olds. Effectiveness drops to 20% by month 2 and effectively zero by month 3.