Universal masking at Mass General Hospital was associated with a significantly lower rate of SARS-CoV-2 positivity among health care workers. This association may be related to a decrease in transmission.
However, randomized trials of universal masking during a pandemic are likely not feasible.
Nonetheless, these results support universal masking as part of a multipronged infection reduction strategy in health care settings.
Total vaccine doses per 100 people
“There remains a shocking imbalance in the global distribution of vaccines,” WHO Director General Tedros Adhanom Ghebreyesus told a news conference.
Source: BBC News