Bulgaria has a long immunization experience. Immunizations against tuberculosis, polio, diphtheria, pertussis, tetanus, measles, mumps, rubella, and hepatitis B have been mandatory for decades as well as recently introduced immunizations against pneumococcal diseases and Haemophilus infl.b infections too. Additionally, HPV vaccine was intensively introduced as recommended for 12-year old girls within a national vaccination campaign for prevention of HPV - caused cancers.