Thứ Bảy, 31 tháng 7, 2021

NPR News: Q&A: What's Different About The Delta Variant

Q&A: What's Different About The Delta Variant
Health officials around the world are adjusting their plans for combatting the coronavirus in light of the more infectious Delta variant — and evidence that even vaccinated people can spread it.

Read more on NPR
Science - August 1, 2021 at 03:50AM - Q&A: What's Different About The Delta Variant

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