They're extremely common: https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity_incidents https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity..

They're extremely common: https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity_incidents https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity... And keep in mind these are only the ones we know about.