Booster Needed for Delta and Lambda Variants
Scientists may have underestimated the coronavirus. In the beginning, they said mutated versions shouldn’t be much of a problem—until Alpha spiked last fall. Then, Beta made young people sicker. And …
Scientists may have underestimated the coronavirus. In the beginning, they said mutated versions shouldn’t be much of a problem—until Alpha spiked last fall. Then, Beta made young people sicker. And …