If you have booked airfare prior to the big Corona Virus outbreak, and are having second thoughts about flying then contact the airline you purchased your ticket from to see if they would charge you any kind of fee if you reschedule. Alot of airlines are waving the fee for a certain period of time.

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Hotel reservations as well. Check with the hotel. You should be fine as long as you cancel your reservation per the cancellation period when you booked the room.