... The reason COVID-19 cases are increasing this summer is likely because people who haven’t been recently vaccinated or infected have fewer antibodies at the ready to fight off the first sign of the virus and are more likely to experience its symptoms, including fever, chills, sore throat, cough, congestion, body aches, gastrointestinal issues, and fatigue.
Of the four types of masks tested, the duckbill N95 mask came out on top: it blocked 99 percent of large particles and 98 percent of small particles from getting out into the air. Overall, 98 percent of the viral load was blocked by the N95.
