국가표준 예방접종률 조사방법을 이용한 3세 아동의 예방접종률 = Vaccination Coverage Rate among 3 Year Olds (Cohort Born in 2007) Using Korea National Immunization Survey Method

다국어 초록 (Multilingual Abstract)

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%, 1st dose Hepatitis B 99.0%, 2nd dose Hepatitis B 99.3%, 3rd dose Hepatitis B 98.7%, 1st DTaP 99.6%, 2nd dose DTaP 99.5%, 3rd dose DTaP 99.1%, 4th dose DTaP 93.5%, 1st dose poliovirus 99.4%, 2nd dose poliovirus 99.3%, 3rd dose poliovirus 98.4%, 1st dose MMR 99.2%, 1 dose varicella 97.7%, 1st dose Japanese encephalitis 97.9%, 2nd dose Japanese encephalitis 95.9%, 3rd dose Japanese encephalitis 90.7%.
Other vaccination coverage per dose was 1st dose Hib 90.9%, 2nd dose Hib 87.7%, 3rd dose Hib 82.5%, 4th dose Hib 69.4%, 1st dose Hepatitis A 84.5%, 2nd dose Hepatitis A 78.1%, 1st dose pneumococcus 67.1%, 2nd dose pneumococcus 60.5%, 3rd dose pneumococcus 56.7%, 4th dose pneumococcus 51.4%, 1st dose rotavirus 6.0%, 2nd dose rotavirus 5.5%, 3rd 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 coverage was 95.9% at 3:3:3:1, 91.9% at 4:3:1, 90.4% at 4:3:1:3:1, 88.7% at 4:3:1:3:1:1, 56.3%at 4:3:1:3:1:1:3.
Conclusions: The Korean vaccination coverage rates are adequate in terms of the herd immunity.
To improve measuring method for national vaccination coverage rate, our nation must have adequate national immunization registry system. So, we can obtain accurate and timely individual immunization records.

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