We already know that non-SARS coronaviruses were being studied under BSL-2 conditions that are equivalent to a dental office. Even if there’s only a 5 or 10% c

We already know that non-SARS coronaviruses were being studied under BSL-2 conditions that are equivalent to a dental office. Even if there’s only a 5 or 10% chance that this led to the covid-19 pandemic, it calls for action to update safety standards globally.