Hepatitis B vaccination

December 26, 2022 中野区中野区保健所医療・福祉東京都

Effects and side effects of vaccines

Hepatitis B is a disease that occurs when blood or bodily fluids contaminated with the hepatitis B virus enter the body through childbirth, blood transfusions, sexual intercourse, etc., and become infected with the hepatitis B virus ( National Institute of Infectious Diseases Type B ). What is hepatitis? ).
It is said that about 1 in 10 people who become carriers of hepatitis B virus will develop chronic hepatitis several decades later (Hepatitis Information Center). hepatitis B ).
The hepatitis B vaccine was licensed over 20 years ago and is a highly effective and safe vaccine that is used worldwide.
Approximately 1 in 20 children do not develop antibodies against hepatitis B vaccination , but the protective effect is said to last for more than 20 years. no ).
As mentioned above, the opportunity for hepatitis B infection is limited. Commentary on infectious diseases that should be prevented in schools ).
Approximately 1 in 10 children who receive the hepatitis B vaccination experience side effects such as malaise, headache, and swelling, redness, and pain at the injection site.

Children who fall under all of the following 1 to 4 are eligible for hepatitis B vaccination as a routine immunization, and the cost is free.

Living in Nakano Ward (including victims of the Great East Japan Earthquake)
Born after April 1, 2016
Under 1 year old (12 months old) on the day of vaccination (Reference: Counting age )
In addition, if it is within 2 years after becoming able to receive vaccination due to long-term medical treatment (Article 2-4 of the Ordinance for Enforcement of the Immunization Act ) or special circumstances (Article 2-5 of the same Ordinance), Free hepatitis B vaccination is available (Article 1-3, Paragraph 2 of the Order for Enforcement of the Immunization Act ).
For details, please proceed to For those who could not receive routine vaccinations due to long-term illness (long-term medical treatment exception) .
Never received hepatitis B vaccine in combination with anti-HBs human immunoglobulin to prevent mother-to-child transmission (in this case, health insurance applies, so routine immunization is not covered)

After 2 doses at intervals of 27 days or more, 1 dose at intervals of 139 days or more from the first dose (total of 3 doses).
The standard inoculation period is from 2 months to 8 months after birth.
Vaccination is a medical practice, and depending on the doctor's judgment, it may not be possible to inoculate at the legal intervals.
When actually inoculating, refer to the vaccination schedule and consult with your doctor to ensure that you do not miss any vaccinations.

Different vaccines can be given at the same time if the doctor deems it necessary.

The hepatitis B vaccination is an individual inoculation that each person who wants to receive is required to go to the medical institution by adjusting the date and time with the medical institution.
The days and times of vaccinations differ depending on the medical institution, so be sure to contact each medical institution in advance and make an appointment before going out.
For details of medical institutions in Nakano Ward where hepatitis B vaccinations can be received, please go to the list of medical institutions offering vaccinations for children .
If you wish to have the vaccination at a medical institution other than the one in Nakano Ward, please proceed to To receive vaccination outside Nakano Ward .

On the day of the vaccination, please bring the maternal and child health handbook and the preliminary examination slip to the medical institution .
If someone who is familiar with the child's health, such as a grandparent, accompanies the child to the vaccination in place of the guardian, please also bring a power of attorney to the medical institution. For more information, please proceed to " In principle, parents must be accompanied to receive routine immunizations ."