The novel coronavirus that causes Covid-19 can survive in the air for longer in humid conditions, a new study has reported. SARS-CoV-2, which has killed around three-quarters of a million people worldwide, is carried in microscopic droplets emitted during natural respiratory activities, such as breathing, and talking. But in an environment with high humidity – a high concentration of water vapour present in the air – droplets can travel up to 16 feet away. High humidity can extend the airborne lifetime of medium-sized droplets by as much as 23 times, the US researchers claim. Dry air with a low humidity, on the other hand, can accelerate natural evaporation of the droplets and restricts the distance they can travel.
Aug-18-2020, 15:18:38 GMT