You can always wear a face mask if worried. When in a crowd, don't shake shake hands, give hugs, stay around the edge of the crowd, not in the center of everybody. I keep hand sanitizer in my pocket. I stay amongst the people that I primarily know. If people get offended by my stand offish behavior, I've gotten to the point of shrugging it off. It takes me longer to get better than them so I think of myself. I also make sure that I take extra vit c every day and vit d3.