NPR News: Screening at U.S. airports expands to try to detect new COVID variants

Screening at U.S. airports expands to try to detect new COVID variants
The CDC has expanded screening of incoming international air travelers to try to more quickly spot any new variants that might emerge from China's massive COVID outbreak.

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Làm đẹp Blog 247 January 14, 2023 at 04:51AM
Category Science