Phlegm in the throat is usually due to colds caused by respiratory infections or bronchitis, phlegm in the throat symptoms, it is not recommended to vaccination, during the period of illness, the baby’s resistance is relatively weak, this time to vaccination, the baby is very likely to have a fever and other uncomfortable symptoms, you can wait for the phlegm in the throat after the symptoms have disappeared completely and then take the vaccination. It is recommended that during the period of phlegm in the throat, the baby needs to go to the pediatrician of the hospital for a detailed examination, and under the guidance of the pediatrician for treatment, and after the treatment is cured, the baby can go to take the vaccination. During the cough treatment, you can drink more water, pay attention to a light diet, do not eat too much oil, too greasy food, to avoid the deterioration of the condition, affecting the therapeutic effect.