Adrien Burch, an expert in microbiology at the University of California, Berkeley, noted that “despite hearing that face masks ‘don’t work,’ you probably haven’t seen any strong evidence to support that claim. That’s because it doesn’t exist.”

In fact, there is evidence of the exact opposite: that masks help prevent viral infections like the current pandemic… One study of community transmission in Beijing found that “consistently wearing a mask in public was associated with a 70% reduction in the risk of catching SARS.” Article Link: https://www.cnn.com/2020/04/01/asia/coronavirus-mask-messaging-intl-hnk/index.html