<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, My 2 year old had Hepatitus A B jab last Thursday and became ill with a chesty cough and flu symptoms in the last 48 hours. She is now showing a temperature of 39.2 and has very watery eyes and is pretty upset whinging, are these symptoms of the vaccine?  <response>: Hi, I had gone through your case and understand your concern. Flu like symptoms after the vaccine is a quite common side effect.Dont worry generally. It is not serious and should go by itself within a few days, but if it is getting away or the child is not able to breathe properly you must consult your doctor immediately. Otherwise, you can wait for 3-4 days if its a mild flu and can give paracetamol and the child should be fine thanks Hope I have answered your query. Let me know if I can assist you further. 