The condition mentioned by the patient is still relatively common, and can generally be divided into a true cold, and a febrile reaction to the vaccination. A small number of children will experience cold-like symptoms after immunization, which are actually just a physical reaction to the immunization, such as fever and fatigue. At this time, usually do not need special treatment, pay attention to rest, drink more hot water, you can get better relief. If the patient is sure that the cold is really cold, at this time also do not need to panic, not because after the injection, the patient’s cold symptoms will gradually worsen, timely anti-flu treatment can be, will not affect the efficacy of the preventive vaccine. Patients do not need to worry about this, this is not a particularly complex issue, there is no special relationship between the two, parents are advised not to be nervous.