Vaccination is not recommended during a child’s runny nose, based on two factors: First, a child’s runny nose is likely to be the early stages of respiratory viral or bacterial infections, and vaccination in an infected condition may aggravate the symptoms of the infection, and a reaction to the vaccination may occur. Secondly, some children’s runny noses may be the early stage of allergy symptoms, or the original allergic rhinitis, sinusitis appeared new secondary infection and attack. At this time the child is prone to allergies, vaccination may cause the child to have an allergic reaction, in addition to making the original runny nose, cold symptoms worsened, but also may have a rash, asthma, to pay special attention.