For the first few months of the pandemic, the science was unclear about whether face masks protected wearers from coronavirus.
The World Health Organization and the U.S. Centers for Disease Control and Prevention initially said that most people didn’t need masks. The exceptions were people in high-risk groups (seniors and those with heart disease, high blood pressure, or diabetes), caregivers to infected people, and people who were confirmed to have COVID-19 or showed symptoms.… Read More