Re: I'll bite :)
Point stands. Correlation isn't causation. Vaccines don't guarantee immunity, or prevent transmission. Science, or just policy can't really prove one way or the other. Maybe one got sick with delta, the other with omicron. Won't know that without sequencing both. Or it could be a 'case' thing. One tests positive, self-isolates, then goes back to work. Second person gets sick, sow how come? Or maybe there was a 3rd person who was asymptomatic and infected both.
But there's no easy way to be sure. If track & trace identified a potential contact, and staff followed that up with their own tests, that might identify the 3rd person, but not any actual 'patient zero'.
Biting the hand that feeds IT
