A gym trainer exposed 50 athletes to Covid-19, but no one else got sick because of a ventilation redesign

A Virginia gym owner thought she had a nightmare scenario on her hands when she learned that 50 athletes were potentially exposed to Covid-19 particles by one of the gym's coaches. But not a single member ended up contracting the virus, thanks to the extra safety precautions and ventilation measures she put in place.

source https://www.cnn.com/2020/11/19/us/gym-ventilation-covid-trnd/index.html