Additionally I am keeping up on how the virus is transmitted so I know what kinds of precautions I need to take. Information about how the virus is likely to be transmitted has changed over time. Surface transmission is now thought to be a less likely route. This means that getting the virus from touching a surface that has the virus on it, while possible, is not the main route of getting COVID-19. Droplet trasmission continues to be the most common way people get sick. Droplets are expelled when we cough, sneeze, sing or yell and, to a lesser degree, during normal talking. This is why masks are so important. Transmission through breathing (rather than coughing or sneezing) is called “aerosol transmission” (see this article for some good info: https://www.statnews.com/2020/03/16/coronavirus-can-become-aerosol-doesnt-mean-doomed/). You will see in the article that there have been some documented cases of it becoming an aerosol.  Here is an article published 3/18/20 that shows that there may be conditions where the virus can linger in the air for up to 3 hours (https://www.biospace.com/article/novel-coronavirus-is-stable-on-surfaces-for-hours-days-nih-study-finds/). The levels of aerosol can accumulate in an office (like mine) over the course of the day such that people seen later in the day may be more at risk of aerosol transmission.