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- Pfizer vaccine works against coronavirus mutation in UK and S. Africa variants Livescience.com
- Yes, you can still get infected with Covid-19 after being vaccinated. Here's why CNN
- The Latest: WHO approves delaying time between virus shots kwwl.com
- EU doubles Covid vaccine order as Germany sees record deaths | DW News DW News
- Pfizer Reports Good News on Fast-Spreading Strains Newser
- View Full Coverage on Google News
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