Department of Aeronautics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K. Institute for Molecular Science and Engineering, Imperial College London, London SW7 2AZ, U.K.

A primary route of transmission of COVID-19 is via respiratory particles, and it is known to be transmissible from presymptomatic, paucisymptomatic, and asymptomatic individuals. Reducing disease ...

“The harm to 3M’s reputation and the 3M brand of being associated with price-gouging and/or raising the prices of its N95 respirators during the global Covid-19 pandemic is immeasurable,” U.S.