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Jin Gwack 3 Articles
Case Series of Mycobacterium Abscessus Infections Associated with a Trigger Point Injection and Epidural Block at a Rural Clinic
Jun Young Song, Jung Bin Son, Min Ki Lee, Jin Gwack, Kil Soo Lee, Ji Young Park
Epidemiol Health. 2012;34:e2012001.   Published online January 25, 2012
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  • 9 Crossref
AbstractAbstract PDF
<sec><title>OBJECTIVES</title><p>The aim of this report is to investigate <italic>Mycobacterium abscessus</italic> infections at a rural clinic and carry out a surveillance program to determine the extent and source of these infections.</p></sec><sec><title>METHODS</title><p>The authors conducted an active surveillance investigation of 36 patients who had visited the clinic since 1 July 2008. Clinical specimens were collected from the patients and an envirnmental investigation. Pulsed-field gel elctrophoresis (PFGE) was performed for comparing with <italic>M. abscessus</italic> isolates from the patients.</p></sec><sec><title>RESULTS</title><p>Six specimens were obtained from the 6 patients respectively and 22 environmental samples were obtained. <italic>M. abscessus</italic> was isolated from the wounds of two patients, and various nosocomial pathogens, but not <italic>M. abscessus</italic>, were isolated from the surrounding environment. Two strains of <italic>M. abscessus</italic> from patients were identical as a result of PFGE.</p></sec><sec><title>CONCLUSION</title><p>Infection control education including proper hand hygiene should be emphasized for physicians performing invasive procedures. There also needs to be more attention for invasive procedures management, including trigger point injection and epidural block in rural clinics.</p></sec>


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    International Journal of Infectious Diseases.2015; 36: 62.     CrossRef
  • A Case of Meningitis Caused by Mycobacterium abscessus in a Paediatric Patient
    D. R. Gayathri Devi, H. B. Mallikarjuna, Anusha Chaturvedi, S. Vishnu Prasad
    Journal of Tuberculosis Research.2015; 03(02): 54.     CrossRef
  • A Case of Continuous Ambulatory Peritoneal Dialysis-Associated Peritonitis Caused byMycobacterium abscessus
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Long-term prediction of gastric cancer mortality in Korea.
Jin Gwack, Yunhee Choi, Hai Rim Shin, Yun Chul Hong, Keun Young Yoo
Korean J Epidemiol. 2005;27(1):163-172.
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AbstractAbstract PDF
This study was carried out to predict the mortality rate for gastric cancer up to 2020 in Korea with forecasting model.
The trends of the age-adjusted mortality rate was calculated from 1983 to 2003 using the mortality data of the past 20 years in Korea, and projected up to the year of 2020 with log-linear models for each gender. The number of deaths from gastric cancer was calculated from the predicted mortality rate.
Age-adjusted mortality rates for gastric cancer per 100,000 persons were 32.13 in 1983, 23.95 in 1990, and 15.99 in 2003 for women, and 70.37, 58.74, 41.04 for men, respectively. The expected age-adjusted mortality rates for gastric cancer were 16.50 in 2005, 14.27 in 2010, and 10.66 in 2020 for women, and 39.14, 33.83, 25.28 for men, respectively. In contrast to this decreasing trend, it is predicted that mortality rates for those aged 75 or over would increase steadily. The predicted number of deaths from gastric cancer was 6,519 for women and 13,743 for men in 2020.
This study suggests that gastric cancer mortality rate would decrease continuously except for some aged groups. The declining trends in gastric cancer mortality are regarded as a result of lifestyle changes, improvements in screening methods and treatments. Strategies for aged groups should be developed in order to control increasing mortality rates.
Mortality Trends in Colorectal Cancer and Breast Cancer in Korea: Birth Cohort Effects?.
Jae Kwan Jun, Yeon Ju Kim, Jin Gwack, Yunhee Choi, Yun Chul Hong, Keun Young Yoo
Korean J Epidemiol. 2005;27(1):154-162.
  • 65,535 View
  • 39 Download
AbstractAbstract PDF
Cancer has been the leading cause of deaths since 1980s in Korea. Among them, colorectal cancer and breast cancer shows steadily increasing pattern, being the fourth and the fifth common site of cancer death in Korea, respectively. This analysis aimed to evaluate potential contribution of birth cohort effects to the recent increases in mortality of colorectal cancer and breast cancer since 1983 in Korea.
Mortality statistics on deaths of both cancers for the past 20 years of 1983~2002 were obtained from the National Statistical Office. The age-standardized mortality rates were calculated based on the census population of 1992 as a standard.
Age-standardized mortality rate for colorectal cancer increased 4.7-fold in men and 3.6-fold in women, whereas 2.1-fold increase in breast cancer mortality during 1983~2002. Age-specific mortality rates for colorectal cancer were steadily increasing by age before 1991 in both genders. However, the mortality rates showed an exponentially increasing pattern for the age group of 70 and over during 1993~2001, which was more prominent in female. The birth cohort curves showed that there were 2- to 3-fold increases in the mortality rates of people who were born in 1931 for colorectal cancer compared to those of people who were born in 1921. Differences in mortality for breast cancer by birth cohort were 1.7-fold among age group of 45~49 and 50~54 between 1936 and 1946.
This analysis suggests that recent increases in mortality of colorectal cancer and breast cancer could potentially be due to birth cohort effects, i.e. rapid changes in life-style in younger generation. The quantitative approach using age-period-cohort model should be pursued.

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