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Seroepidemiology of HBV Infection in South Korea , 1995 through 1999
(Myoung Kuk Jang),(Ja Young Lee),(Jin Heon Lee),(Yong Bum Kim),(Hak Yang Kim),(Myung Seok Lee),(Choong Kee Park),(Jae Young Yoo) 대한내과학회 2001 The Korean Journal of Internal Medicine Vol.16 No.3
N/A Background: We analyzed serologic data that were obtained from the Korea Association of Health from 1995 to 1999 to estimate the reliable prevalence of HBV in South Korea. Methods: 603, 375, 639, 465, 621, 476, 612, 705 and 650, 398 serum samples were annually tested for HBsAg. Of HBsAg positive persons whose serum samples were available, HBeAg positivity was checked. Results: HBsAg positivities among subjects between 6 and 19 years old were 8.2 %, 3.9 %, 2.1%, 2.6 % and 1.3 %. HBsAg positivities among subjects above 20 years old were 8.9 %, 6.4 %, 5.9 %, 5.4 % and 5.4 %. The positive rates of HBeAg were 39.8 to 62.9 % among subjects between 6 and 19 years old, and 18.3 to 37.9 % among persons above 20 years old, in each year. In both subgroups, HBsAg positivity in the latter year was significantly lower than that in the former year (p<0.001). It also showed that HBsAg positivities among subjects between 6 and 19 years old have been significantly lower than those among subjects above 20 years old, but those of HBeAg the exact reverse of HBsAg since 1996. Conclusions: It was observed that prevalence of HBV infection in the late 1990s, especially in the group between 6 and 19 years old, was conspicuously lower than that in the past. The nationwide vaccination programme might be one of the most important contributors to this tendency in Korea.
최근 3년간 강원도 초·중·고등학생의 HBsAg 양성률 변화에 관한 연구
장명국(Jang Myoung Kuk),이자영(Ja Young Lee),이진헌(Jin Heon Lee),김용범(Yong Bum Kim),김학양(Hak Yang Kim),유재영(Jae Young Yoo) 대한내과학회 2000 대한내과학회지 Vol.58 No.6
Background : Since 1983, vaccination for Hepatitis B virus(HBV) has been recommended for all neonates in Korea. Therefore, significant change of HBsAg positive rate is expected. The objective of this study is to investigate HBsAg positive rate of grade, junior high, and high schoolers in Kangwon Province.Methods : From 1997 to 1999, total 120,220 subjects, who were born in 1981 to 1992, were enrolled in this study. HBsAg and anti-HBs were tested by reversed passive hemagglutination and passive hemagglutination, respectively. If their results had been vague, we perfomed enzyme-linked immunosorbent assay for confirmation. Results : HBsAg positive rate of entire study group was 2.5%(3,045 out of 120,220). Those of schoolboys and schoolgirls were 2.6%(1,567 out of 60,076), 2.5%(1,478 out of 60,144), respectively. Significant statistical difference was not observed in comparison of HBsAg positive rate according to sex(p=0.09). HBsAg positive rate of grade schoolers was 1.4%(676 out of 48,871), which was significantly lower than that of junior high(3.2%, 557 out of 17,577) and high-schoolers(3.4%, 1,812 out of 53,772)(p<0.01). From 1997 to 1999, HBsAg positive rate has significantly decreased from 2.8%(1,434 out of 50,434) to 1.9%(407 out of 20,991)(p<0.01). HBeAg positive rate of HBsAg positive subjects was 62.9%(1,000 out of 1,590). Conclusion : HBsAg positive rate of grade-schoolers in Kangwon province Korea, tended to be lower than that of junior high, or high-schoolers, and is also thought to be lower than that of the past, which was caused by nationwide vaccination programme.(Korean J Med 58:608-615, 2000)
한국인의 위궤양 및 십이지장궤양 환자에서 Helicobacter pylori 감염 빈도
장명국(Myoung Kuk Jang),김학양(Hak Yang Kim),조병동(Byung Dong Cho),장웅기(Woong Ki Jang),김동준(Dong Jun Kim),김용범(Yong Bum Kim),박충기(Choong Kee Park),신형식(Hyung Sik Shin),유재영(Jae Young You) 대한내과학회 1997 대한내과학회지 Vol.52 No.4
Objectives: Peptic ulcer is the major condition that affect numerous individuals every year. In 1983, Warren and Marshall presented the evidence that H. pylori was associated with gastritis and peptic ulcer. Thereafter, K. pylori infection is thought to be a important factor in the pathogenesis of gastric and duodenal ulcer. In western studies, about 58% to 100% of patients with peptic ulcer disease were infected with H. pylori. But in Korea, there is no study about the prevalence of H. pylori infection in peptic ulcer disease despite of its high prevalence and importance. The aim of this study was to investigate the prevalence of H. pylori infection in case of gastric and duodenal ulcer disease in Korea. Methods - We surveyed the prevalence of H. pylori infection of 1031 patients, who were diagnosed as gastric or duodenal ulcer by gastrofiberoscopy. H. pylori infection was evaluated with Rapid Urease Test(CLO test) and/or histology by Wright-Giemsa staining. Results: 1) Peptic ulcer was more frequently developed in males than females, as the frequency of peptic ulcer was 77% in males, and 23% in females. But in view of the prevalence of H. pylori infection, there was no significant difference between males and females, 73% in males and 71% in females. 2) Gastric ulcer was most common in sixth decade(29.8%), but the prevalence of H. pylori infection was peak in fourth(76%), and fifth decade (73%). 3) Duodenal ulcer was most common in fourth decade(26.3%), but the prevalence of H. pylori infection was peak in teenagers(93%) and third decade(87%). 4) The patients who had both gastric ulcer and duodenal ulcer concurrently were most common in sixth decade(27.9%), but the prevalence of H, pylori infection was peak in third decade(100%). Conclusion: We concluded that the majority of peptic ulcer patients in Korea had H. pylori infection. Particularly, young aged patients had higher H. pylori infection rate than old aged.