As discussed in this previous meta post, I think health questions are not a good fit for the site and should be closed. This concerns mostly questions like "Is X healthy?" that are not about understanding biological mechanisms.
Does this question fall into this? Survival of streptococcus after my scarlet fever
This seems to be a perfectly valid bacteriology question dealing with probabilty of infection and prevention.
Please explain explicitly what is meant by health advice?
"Will a specific strategy prevent something?" type of question is asking about biological mechanisms and this is explicitly not about treatment. As these deal specifically with epidemiology are these questions not welcome here?