The reason BCG needs to be picked up and given is related to its method of vaccination, which is often intradermal.
BCG is a vaccine used to prevent Mycobacterium tuberculosis infection and is required for infants and young children from birth. BCG is usually given by intradermal injection into the upper deltoid muscle of the upper arm. Intramuscular and subcutaneous injections of the vaccine are prohibited, so it is necessary to disinfect the skin surface and make “well” scratches before applying the bacterial solution and allowing it to be absorbed into the skin.
There is another way of inoculation that does not use the scratch method, but uses a needle to inject the bacterial solution directly into the skin.
After BCG inoculation, the inoculant should wait until the liquid is absorbed into the skin and observe that the inoculant has no adverse reaction before leaving. Parents should also clean their children’s bodies well to avoid infection of the inoculation site.