You can’t get a vaccination if you have a cold. Even if you have mild symptoms of a runny nose, you should not be blindly vaccinated. If you get vaccinated after having a cold, first, it will worsen the symptoms of the cold. Secondly, it increases the risk of a reaction to the vaccine. Finally, the presence of infection makes the newly vaccinated vaccine, much less useful. Therefore, if the baby is in a state of illness, do not rush to vaccinate, should be vaccinated after healing, and only after complete healing, after 10 days of stopping medication. After vaccination, the baby should be observed in the hospital for half an hour to see if there is any adverse reaction. If there is any adverse reaction, consult your doctor to see if it is normal. If it is normal, there is no need to worry; if it is abnormal, it should be handled according to the doctor’s instructions. Give your baby plenty of water when you get home.