Social and Clinical Characteristics of Immigrants with Tuberculosis in South Korea

Gee-Ho MIN; Young KIM; Jong-Seok LEE; Jee-Youn OH; Gyu-Young HUR; Young-Seok LEE; Kyung-Hoon MIN; Sung-Yong LEE; Je-Hyeong KIM; Chol SHIN; Seung-Heon LEE

PURPOSE:

To determine the social and clinical characteristics of immigrants with tuberculosis (TB) in South Korea. MATERIALS AND

METHODS:

The registered adult TB patients who were diagnosed and treated in Korea Medical Centers from January 2013 to December 2015 were analyzed retrospectively. A total of 105 immigrants with TB were compared to 932 native Korean TB patients.

RESULTS:

Among these 105 immigrants with TB, 86 (82%) were Korean-Chinese. The rate of drug-susceptible TB were lower in the immigrants group than in the native Korean group [odds ratio (OR) 0.46; 95% confidence interval (CI) 0.22–0.96, p=0.035]. Cure rate was higher in the immigrant group than in the native Korean group (OR 2.03; 95% CI 1.26–3.28, p=0.003). Treatment completion rate was lower in the immigrant group than in the native Korean group (OR 0.50; 95% CI 0.33–0.74, p=0.001). However, treatment success rate showed no significant difference between two groups (p=0.141). Lost to follow up (default) rate was higher in the immigrant group than in the native Korean group after adjusting for age and drug resistance (OR 3.61; 95% CI 1.36–9.61, p=0.010). There was no difference between defaulter and non-defaulter in clinical characteristics or types of visa among these immigrants (null p value). However, 43 TB patients with recent immigration were diagnosed as TB even though they had been screened as normal at the time of immigration.

CONCLUSION:

Endeavor to reduce the default rate of immigrants with TB and reinforce TB screening during the immigration process must be performed for TB infection control in South Korea.

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