Modeling of SARS-CoV-2 spread in Hunan, China showed that a minority of people infected with COVID-19 transmitted most infections. More than half of infections were spread before infected people developed symptoms. The findings could help inform better policies to control the spread of COVID-19 while balancing economic impact.
The coronavirus SARS-CoV-2 is transmitted predominantly through the air — by people talking and breathing out large droplets and small particles called aerosols. Catching the virus from surfaces — although plausible — seems to be rare. Despite this, some public-health agencies still emphasize that surfaces pose a threat and should be disinfected frequently. The result is a confusing public message.
Link to article: https://www.nature.com/articles/d41586-021-00277-8