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4 Division of VPD Control and NIP, Korea Centers for Disease Control and Prevention 5 Objectives: The purpose of measuring vaccination coverage rate is to monitor adequate vaccination status for reducing communicable disease occurrence. So lots of nations surveyed vaccination coverage by the use of various measuring methods, and developed immunization policy and program following to these survey results. This study developed standard Korea National Immunization Survey method for measuring vaccination coverage in national and metropolitan level, and then measured real status, finally, suggested further developmental directions of national standard survey method. Methods: We developed the formal process as a national standard, go through Korean national advisory committee for vaccination and then Statistics Korea. We performed the computer aided telephone interview. The source of information is household-retained vaccination cards. And survey population is 7,040 at 3-year-olds (cohort born in 2007) who registered in national immunization registry system. The unit of sampling is each metropolitan and provincial area using minimum sample size determination method (precision 5%, confidence interval 95%, assumed coverage rate 50%). Results: The national vaccination coverage per dose was 1 dose BCG 98.8%, 1 st dose Hepatitis B 99.0%, 2 nd dose Hepatitis B 99.3%, 3 rd dose Hepatitis B 98.7%, 1 st DTaP 99.6%, 2 nd dose DTaP 99.5%, 3 rd dose DTaP 99.1%, 4 th dose DTaP 93.5%, 1 st dose poliovirus 99.4%, 2 nd dose poliovirus-이석구 외 인 국가표준 예방접종률 조사방법을 이용한 세 아동의 예방접종률 6 : 3-63-99.3%, 3 rd dose poliovirus 98.4%, 1 st dose MMR 99.2%, 1 dose varicella 97.7%, 1 st dose Japanese encephalitis 97.9%, 2 nd dose Japanese encephalitis 95.9%, 3 rd dose Japanese encephalitis 90.7%. Other vaccination coverage per dose was 1 st dose Hib 90.9%, 2 nd dose Hib 87.7%, 3 rd dose Hib 82.5%, 4 th dose Hib 69.4%, 1 st dose Hepatitis A 84.5%, 2 nd dose Hepatitis A 78.1%, 1 st dose pneumococcus 67.1%, 2 nd dose pneumococcus 60.5%, 3 rd dose pneumococcus 56.7%, 4 th dose pneumococcus 51.4%, 1 st dose rotavirus 6.0%, 2 nd dose rotavirus 5.5%, 3 rd dose rotavirus 5.1%. In completeness for each vaccine, total 3 doses of Hepatitis B was estimated at 98.2%, 3 doses of DTaP 99.0%, 4 doses of DTaP 93.2%, 3 doses poliovirus of 98.4%. And series vaccination

Objectives: Vaccinations are recommended throughout life to prevent vaccine-preventable diseases and their sequelae. The various efforts for effective vaccination came huge outcomes in short periods. These experience in health program is very rare. But the problems are many in front of vaccinations, for examples, development new vaccines or combo vaccine with high price, low coverage of booster vaccines, difference in vaccination rate between regions or population groups. So there are too many challenging problems to solve. To measure immunization rate is very important because we can know adequate vaccination status for reducing communicable disease occurrence. So lots of nations survey vaccination coverage with various measuring methods, and develop immunization policy and program following to these survey results. This study has two goals. the first goal is to develop standard Korean National Immunization Survey method among 7 year olds in national and metropolitan level, and the other goal is to measure real status. Methods: We carried out the formal process for confirm standard survey method as a national standard, and went through Korean national advisory committee for vaccination and then Statistics Korea. And we performed the computer aided telephone interview (CATI)). The source of information is household-retained vaccination cards. The survey population is 6,700 at 7 year olds (cohort born in 2004) who registered in national immunization registry information system. The unit of sampling is each metropolitan and provincial area using minimum sample size determination method (precision 5%p, confidence interval 95%, assumed coverage rate 50%). Results: The national vaccination coverage per dose was 1 dose BCG 99.6%, 1st dose Hepatitis B 99.4%, 2 nd dose Hepatitis B 99.4%, 3