The effect of vaccinations on breastfeeding during breastfeeding depends on what kind of vaccine it is, influenza vaccine, HPV vaccine, try not to get vaccinated during breastfeeding, other vaccines usually do not have a great effect. There are many types of vaccines, mainly including inactivated and live attenuated vaccines. Generally speaking, most vaccines do not cause any different harm to breastfeeding women, nor do they enter the breast milk and affect babies and young children. Therefore, most vaccines can be given during breastfeeding and generally have no effect on breastfeeding. However, for the flu vaccine and HPV vaccine, try not to get them while breastfeeding. It is recommended that these two vaccines be withheld until the end of the breastfeeding period. If you experience any discomfort after the vaccination during breastfeeding, such as fever, rash, localized pain and swelling, etc., you should consult a doctor and follow the doctor’s instructions for further examination and treatment, and do not leave the matter unattended, which may cause delay in your condition.