Hi. I recently had friends come to visit and one hadn't been feeling well but had been on antibiotics for a few days. I have been told by doctors that 24 hours on antibiotics means you are no longer contagious. Their daughter was sneezing a lot but they said it was allergies. They were concerned about me thinking she was sick and I believe that they truely believe it was allergies. but now Maggie has a runny nose and slight cough. It is only the second time she has had a runny nose and she has never had a cough so.... is it true that after 24 hours of antibiotics you are not contagious or should I just keep people away anyway to be on the safe side? And if someone says it's just allergies... should I still keep Maggie away? Should I play better safe than sorry in these matters?