Stricter travel rules begin as US cases climb; J&J vaccine works well as mix-and-match booster, study says: COVID-19 updates
International travelers arriving to the U.S. face stricter rules. Study says Johnson & Johnson vaccine serves as an effective booster. Live updates.
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Stricter travel rules begin as US cases climb; J&J vaccine works well as mix-and-match booster, study says: COVID-19 updates
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December 06, 2021
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