https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD006207.pub6/full/pt?contentLanguage=pt&fbclid=IwAR1NXeCRGHhE8QIav1FZ75sY9r-kC80zc5P6IkZG2Xzhr5pnaSS6v5up1-s&mibextid=ncKXMA#0

Meta-analysis showing that masks makes almost no difference on the spread of COVID .

We all knew that already but the data lags on The truth.