I'd be interested in seeing a counter example. But I'm pretty sure for someone to be guilty of manslaughter there has to be an actual death, not just a risk of death. Reckless endangerment might be a more reasonable charge, but I think that assumes herd immunity as the baseline of risk and thus anything that raises that is endangering you. As I've argued elsewhere in this thread, we don't have a right to herd immunity, it's something we'll either do or not do as a herd and currently we seem to be choosing the latter.