Hello! Frequent ARVI should not affect your child's vaccination, he/she needs vaccination, perhaps even more than children who are not sick. To clarify the child's immune status, general condition before vaccination, you need to carry out laboratory diagnostics, namely: clinical blood and urine tests, as well as immunogram, and after examination by a pediatrician, if there are no contraindications, draw up individual vaccination schedule. All this can be done in the ON Clinic pediatric department.