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End of carouselNearly two years into the pandemic, every country, including the United States, remains dangerously unprepared to respond to future epidemic and pandemic threats, according to a report released Wednesday.
Early data from Pfizer and BioNTech suggest that two shots of their vaccine may not be sufficient to prevent infection from omicron and booster doses will be critical.
Crowded airports and gatherings are back this season. Our interactive guide will help you navigate them as safely as possible
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