BCG vaccine

Writte on: 06/09/2020

Category: Vaccines

BCG vaccine

Bacillus Calmette–Guérin (BCG) vaccine is a vaccine primarily used against tuberculosis (TB)

Extremely effective in preventing tuberculosis. There are group vaccinations and individual vaccinations depending on the local government.

Inoculation of this vaccine can immunize against tuberculosis, making it less likely to take it.
Tuberculosis, which does not receive immunity from mothers, is a serious illness in infants.
Although the number is decreasing, some local governments are carrying out collective vaccinations. In case of group vaccination, the vaccination period is fixed, so check the schedule early.
The vaccination period for regular vaccination is less than 1 year old. As a general rule, vaccinations (pay) will be given after the age of one.


Need to re-receive if there are few needles left?

About 3 weeks to 1 month after inoculation, BCG will have red after the needle.
It is considered that immunity is achieved if 9 or more needle marks out of 18 are left, but there are individual differences in the reaction, and in some cases, the reaction can be seen only to the extent that redness appears to some extent.
If you have a problem that the number of needles is small or you cannot see it, please consult your doctor as a precaution.

1. Contents of BCG vaccine
2. Notes on BCG vaccination
3. Side reaction of BCG vaccine
4. Points of vaccination schedule


1. Contents of BCG vaccine

Regular or any?
Regular vaccination

Inoculation method
Stamp method

Type of vaccine
Live vaccine

Interval with another vaccination next
Medium 27 days or more


Inoculation period

The regular vaccination is from 0 months to under 1 year old, but the standard vaccination is from 5 months to 8 months.
・We inoculate once by 11 months of age (under 1 year old)
・The standard inoculation period is from 5 months old to less than 8 months old.

Administered under 12 mos of age,
generally administered during the period from 5 mos to <8 mos

Reference from Japan Pediatric Society :