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Harvard HealthEvidence shows that mask-wearing can help reduce spread of COVID-19 infections, keep waves of serious illness from overburdening our hospitals, and save lives. Masks
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Evidence shows that mask-wearing can help reduce spread of #COVID19 infections, keep waves of serious illness from overburdening our hospitals, and save lives. Learn which types of masks are best and how to wear them correctly. https://t.co/lM4aVRE9Dm #HarvardHealth https://t.co/lM4aVRE9Dm - view on twitter