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Most experts say they use a good quality medical mask such as an N95 or KF94 when flying. If you don't have one, double masking is recommended. For a vaccinated person, the risk of briefly removing a mask to eat or drink during a flight…

Almost three million people in the United States receive the Covid-19 vaccine every day. And each new burst raises new questions about what to expect after vaccination.Last week I asked readers to send me their questions about…