Interesting. I'm an American, and once sustained a bloody but minor scrape of my knee when playing basketball in China. I went to the campus clinic/dispensary to obtain some bandages, since I couldn't find any that were the right size at the nearby convenience store; there, the staff practically tried to admit me, telling me that I had sustained a very serious injury and that I needed to take it seriously and start a course of antibiotics. After an awkward conversation concerning my refusal to take antibiotics without (what I deemed to be) sufficient cause (being mindful and wary of the resistance risks of an unnecessary course), and their belief that I was being disrespectful of their medical expertise, I left with a bottle of antibiotic pills that I never took. My knee was as good as new in a week or so.

Point being, medical cultures can differ quite a lot, even from locality to locality, and the differences can be seen even in the handling of minor scrapes.