Infection Prevention Department, UNC Medical Center, Chapel Hill, North Carolina.
Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Research Triangle Park, North Carolina.
JAMA Intern Med. 2021 Aug 1;181(8):1126-1128. doi: 10.1001/jamainternmed.2021.2033.
This quality improvement study compares the fitted filtration efficiency of commonly available face masks worn singly, doubled, or in combinations.
本质量改进研究比较了常见的单独佩戴、双层佩戴或组合佩戴的口罩的拟合过滤效率。