Why the CDC Changed Its Advice on Masks

Two scientific findings altered the calculus: Vaccinated people don ’t transmit the virus, and the shots are effective against variants.
Source: NYT Health - Category: Consumer Health News Authors: Tags: your-feed-science Vaccination and Immunization Coronavirus Risks and Safety Concerns Disease Rates Coronavirus (2019-nCoV) Clinical Trials Infections Centers for Disease Control and Prevention States (US) Research Pfizer Inc BioNTech Source Type: news