It's not the recirculated air making you sick on a flight. It's your hands, and everything they touch before your next meal. An infectious disease specialist broke it down to two things that actually matter: wash with soap for 20 seconds before you eat, and wipe your tray table and armrest before you touch either one. Planes don't get sanitized between every flight the way people assume. The one most people skip: sleep, food, and movement before you even get to the airport. Your immune system runs on what you gave it days before, not what you do once you're already sick on the plane. And get current on your vaccines, especially MMR, five-minute call to your doctor if you're not sure. Share this with your travel buddy, the one who's sick by day three.
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