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The prevalence of latent tuberculosis infection in congregated settings in the Republic of Korea, 2018
- Date2019-06-13 20:46
- Update2019-11-19 19:05
- DivisionDivision of Strategic Planning for Emerging Infectious Diseases
- Tel043-719-7271
The prevalence of latent tuberculosis infection in congregated settings in the Republic of Korea, 2018
Choi Jun Kil, Park Ah Young, Jang Mi Ri, An Shin Uk, Jeong Hye Ran, Shin Mi Ra, Kong In Sik
Division of TB ＆ HIV/AIDS Control, Center for Disease Prevention, KCDC
The tuberculosis (TB) incidence rate in Korea was 70 per 100,000 population in 2017, the highest among Organization for Economic Cooperation and Development (OECD) countries. As part of TB prevention, the Korean government began the systematic diagnosis of latent TB infection (LTBI) for about 1.2 million individuals in the high-risk group in 2017 and 0.5 million individuals in 2018. The purpose of this study was to investigate LTBI prevalence among congregated settings, classified into health care workers, nursery workers and out-of-school youth, in 2018. Data were collected from the Integrated Disease and Health Control System by Korea Centers for Disease Control and Prevention (KCDC) from June 1 to December 31, 2018 for 128,906 individuals. Chi-square test was conducted for statistical significance among groups. Of the 128,906 people who underwent LTBI screening, 17,045 (13.2%) had positive results. The number of healthcare workers, nursery workers, and out-of-school youth who underwent LTBI screening and the corresponding prevalence rates were 89,153 (11.0%), 38,953 (18.6%), and 800 (3.3%). The positive rates of LTBI screening by age were 3.0% for those aged 10-19 years, 3.4% for those in their 20s, 9.1% for those in their 30s, 17.7% for those in their 40s, 25.4% for those in their 50s, and 31.0% for those 60 years and above, and the results were statistically significant (P < 0.001). LBTI prevalence rates by gender were also statistically significant (male 14.9%; female 12.9%, P < 0.001). Prevalence rates by geography were 15.8% (Jeju), 15.4% (Gyeonggi), 14.5% (Busan), 14.1% (Incheon), 14.0% (Seoul), 13.6% (Chungbuk), 13.5% (Chungnam), 12.9% (Sejong), 12.7% (Gyeongnam), 12.6% (Gyeongbuk), 11.7% (Daejeon), 11.2% (Jeonnam), 10.8% (Daegu), 10.8% (Jeonbuk), 10.5% (Gangwon), 9.9% (Ulsan), 8.1% (Gwangju) respectively. The results were statistically significant (P < 0.001).
Keywords: Tuberculosis, Latent tuberculosis infection, TB/LTBI incidence, Congregated settings
Choi Jun Kil, Park Ah Young, Jang Mi Ri, An Shin Uk, Jeong Hye Ran, Shin Mi Ra, Kong In Sik
Division of TB ＆ HIV/AIDS Control, Center for Disease Prevention, KCDC
The tuberculosis (TB) incidence rate in Korea was 70 per 100,000 population in 2017, the highest among Organization for Economic Cooperation and Development (OECD) countries. As part of TB prevention, the Korean government began the systematic diagnosis of latent TB infection (LTBI) for about 1.2 million individuals in the high-risk group in 2017 and 0.5 million individuals in 2018. The purpose of this study was to investigate LTBI prevalence among congregated settings, classified into health care workers, nursery workers and out-of-school youth, in 2018. Data were collected from the Integrated Disease and Health Control System by Korea Centers for Disease Control and Prevention (KCDC) from June 1 to December 31, 2018 for 128,906 individuals. Chi-square test was conducted for statistical significance among groups. Of the 128,906 people who underwent LTBI screening, 17,045 (13.2%) had positive results. The number of healthcare workers, nursery workers, and out-of-school youth who underwent LTBI screening and the corresponding prevalence rates were 89,153 (11.0%), 38,953 (18.6%), and 800 (3.3%). The positive rates of LTBI screening by age were 3.0% for those aged 10-19 years, 3.4% for those in their 20s, 9.1% for those in their 30s, 17.7% for those in their 40s, 25.4% for those in their 50s, and 31.0% for those 60 years and above, and the results were statistically significant (P < 0.001). LBTI prevalence rates by gender were also statistically significant (male 14.9%; female 12.9%, P < 0.001). Prevalence rates by geography were 15.8% (Jeju), 15.4% (Gyeonggi), 14.5% (Busan), 14.1% (Incheon), 14.0% (Seoul), 13.6% (Chungbuk), 13.5% (Chungnam), 12.9% (Sejong), 12.7% (Gyeongnam), 12.6% (Gyeongbuk), 11.7% (Daejeon), 11.2% (Jeonnam), 10.8% (Daegu), 10.8% (Jeonbuk), 10.5% (Gangwon), 9.9% (Ulsan), 8.1% (Gwangju) respectively. The results were statistically significant (P < 0.001).
Keywords: Tuberculosis, Latent tuberculosis infection, TB/LTBI incidence, Congregated settings
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