BCG vaccine screened for active tuberculosis. BCG is also contraindicated in certain people who have IL-12 receptor pathway defects. BCG is given as a single intradermal injection at the insertion of the deltoid. If BCG is accidentally given subcutaneously, then a local abscess may form (a "BCG-oma") that can sometimes ulcerate, and may require treatment with antibiotics immediately, otherwise without treatment it could spread the infection causing severe damage to vital organs. However, it is important to note an abscess is not always associated with incorrect administration, and it is one of the more common complications that can occur with the vaccination.
BCG disease outbreak in Finland in the 2000s a disease which in scientific peer-reviewed articles (case descriptions) have been mistakenly first made, and afterward have been noticed to be disseminated BCG infections. One death with a causal link considered established by the adverse event monitoring agency was vaccinated with pre-August 2002 vaccine (Evans), while the three other registered deaths were with the new post-August 2002 vaccine (BCG Vaccine SSI). Officially, vaccination policy is divided to many governmental organizations like the National Agency for Medicines, National Public Health Institute, the National Authority for Medicolegal Affairs, National Research and Development Centre for Welfare and Health (STAKES), the Health Department etc.