Whether a baby with a stuffy nose at the end of a full month can be vaccinated against hepatitis B needs to be determined according to the physical condition; if the body is healthy and meets the requirements for vaccination, it can be vaccinated; if it suffers from some kind of acute or chronic disease or does not meet the requirements for other vaccinations, it cannot be vaccinated. Hepatitis B vaccination requirements stipulate that the presence of hepatitis, fever, acute and chronic serious diseases, a history of allergies, organs with serious deformities and other symptoms are not allowed to vaccinate. Although infants have symptoms of nasal congestion at the end of the month, if the nasal congestion is only caused by dry air and nasal snot blocking breathing, and their health meets the requirements for vaccination, they can be vaccinated with hepatitis B vaccine. If the infant’s nasal congestion is caused by acute upper respiratory tract infection, pediatric pneumonia and other diseases, or there are certain contraindications to vaccination, you can not receive hepatitis B vaccine, vaccination at this time may cause fever, mental instability, abdominal pain and diarrhea and other adverse reactions. If you are not sure whether you can vaccinate your infant, you can also consult your local vaccination center.