Three coronavirus variants — Lambda, Mu, and C.1.2 — have raised red flags among scientists lately. The variants show signs of being highly transmissible, able to circumvent vaccine protection, or ...
Recent studies have shown that the effectiveness of Covid-19 vaccines is decreasing, though experts say the shots still work well. WSJ explains what the numbers mean and why they don’t tell the full ...
As cases of the delta variant continue to raise concerns across the U.S. and a new variant is monitored by the World Health Organization, many are wondering what variants are out there and which we ...
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