Morrison, JoanneChen, Wilbur H.2021-12-132021-12-132021-12-08http://hdl.handle.net/10713/17358Dr. Chen says vaccination remains key to protecting yourself and others from infection, reiterates the importance of mask wearing, physical distancing, and testing as holiday gatherings approach.en-USCoronavirus Disease 2019 (COVID-19)booster shotsCOVID-19 (Disease)University of Maryland, BaltimoreCOVID-19 VaccinesArticle