you can use a scarf. a lot of people have scarves. and you can use a scarf. a scarf would be very good. use a scarf instead of going out and getting a mask. you can use something else over your face. it doesn't have to be a mask.

Large studies in the U.S., Mexico and Britain found two doses of the Novavax vaccine were safe and about 90% effective at preventing symptomatic COVID-19. When the delta variant emerged last summer, Novavax reported a booster dose revved up virus-fighting antibodies that could tackle that mutant.

SinoVac 58%
AstraZeneca 62%
Jansen, Johnson & Johnson 67%