Wearing a #mask around #vaccinated people might be helpful against shedding. Shedding often requires a higher concentration of the pathogen to infect you. Some of which may be blocked by the mask.
Otherwise the only time I would consider wearing a mask is in surgery. In a hospital isolation room. Or a laboratory clean room. But it may be a good idea now to wear a mask in a crowded room of vaccinated people.
Especially during cough and cold season. When many of them are coughing and sneezing more..πππ