Originally Posted by
GoldfishMan
Such a case would surely fail on all causality tests. There are so many unprovable factors here: who had it first, who knew they had it first, what does vaccination do in regards to virus transmission, etc.
In fact, I think the girl and shop would have a strong case to sue the customer for potentially putting their unvaccinated staff in peril. The picture is, here's a shop going about their business, then along comes a customer who actively brought the virus into their bubble. The passive side usually wins such an argument.