Our friends had a baby recently and asked us to visit and bring food. Fine, we're happy to help new parents out with a meal. Then they wrote us a follow up email asking us to make sure we are current on all vaccinations, including whooping cough. We are not current on whooping cough, so the meaning of the email is that we should not visit, which I find pretty offensive. Is this a normal request when visiting friends with a new baby? I've never heard of this before, but in the American south we also don't require guests to bring dinner, either. We tend to not make so many demands of people. I just find it ridiculous that I meet state standards to work in a public school and hold babies for a postnatal yoga class at a yoga studio, but I don't meet his standards for his apartment.