I'm vaccinated, but still wear a mask indoors in public for a simple reason. The virus can colonize the mucus membranes of even healthy vaccinated people. I'm s

I'm vaccinated, but still wear a mask indoors in public for a simple reason. The virus can colonize the mucus membranes of even healthy vaccinated people. I'm scheduled to go on a Caribbean cruise next month. If I test positive on the dock, they won't let me get on the ship.