What is a preventative measure against airborne pathogens?

Using masks or protective facial coverings is an effective preventative measure against airborne pathogens because these barriers help to filter out pathogens present in respiratory droplets and aerosols. When individuals cough, sneeze, or talk, they can expel tiny droplets that contain viruses or bacteria into the air. Masks create a physical barrier that reduces the number of these droplets that can be inhaled by others, thereby minimizing the risk of airborne transmission.

While increasing ventilation in workspaces is also a good practice for reducing airborne pathogens, as it helps to dilute and disperse contaminants in the air, it does not provide the same level of immediate protection to individuals as wearing masks does. Similarly, maintaining high humidity levels may not necessarily target airborne pathogens effectively, as humidity can also impact the viability of pathogens in different ways. Avoiding contact with sick individuals is a valid approach for preventing illness, but it is not specifically targeted at airborne transmission, which is the focus in this context. Masks directly address the transmission of pathogens through the air, making them an essential tool in infection control.