Acids help against airborne viruses

© © CC-BY-NC-ND: Florian Dombois

Exhaled aerosol particles absorb acid molecules from the air. This inactivates viruses contained in the particles more readily, shows a study funded by the SNSF.

A new study by various Swiss universities shows that aerosols in indoor air can vary in acidity. This acidity determines how long viruses remain infectious in the air – with profound implications for virus transmission and strategies to contain it.