ABSTRACT
This paper describes the epidemiological characteristics of bovine brucellosis in Korea during January 2000~September 2004, which encompasses the period when the incidence of bovine brucellosis increased abruptly. Data from the National Animal Infectious Disease Data Management System were used for this study. A range of epidemiological measures was calculated including annual herd and animal incidence. During the study period, there were 1,183 outbreaks on 638 farms. In beef cattle, annual herd incidence increased from 0.2 (2000) to 11.5 (2004, to September) outbreaks per 10,000 and annual animal incidence varied between 3.4 (2000) and 105.8 (2004, to September) per 100,000, respectively. On 401 (62.9%) infected farms during this period, infection was eradicated without recurrence. Recurrence of infection was significantly higher on farms where abortion was reported (53.3%), compared to farms where it was not (30.0%). On beef cattle farms, infection was introduced most frequently through purchased cattle (46.2%). Based on the results of this study, the establishment and spread of brucellosis in the Korean beef cattle population were mainly due to incomplete or inappropriate treatment of aborted materials and the movement of infected cattle.
Subject(s)
Animals , Cattle , Brucellosis , Brucellosis, Bovine , Communicable Diseases , Disease Outbreaks , Incidence , Korea , RecurrenceABSTRACT
OBJECTIVES: To establish Korean prevalence of hypertension, we surveyed male workers resident in Pohang by classification of JNC-5(FIFTH JOINT NATIONAL COMMITTEE CLASSIFICATION OF BLOOD PRESSURE) and further analysed association with age, working condition, body weight, fasting blood sugar, total serum cholesterol, tryglyceride, uric acid, drinking habit, smoking habit and amout of physical exercise. METHODS: We studied 13,052 male workers resident in Pohang from January 1993 to Novemver 1993. Each male worker completed a medical and occupational questionaire and blood pressure was taken. All blood sample were taken at venous blood under fasting state at morning. RESULTS: 1) The overall prevalence rate of hypertension by classification of JNC-5 was 16A percent and most of all hypertensives were in stage 1 and 2. 2) The systolic and diastolic blood pressure increased significantly with age. 3) The prevalence of hypertension in shift workers was significantly higher than that of nonshift workers. 4) The prevalence of hypertension in the subjects of overweight, high fasting blood sugar, cholesterol, triglyceride and uric acid level was significantly higher than that of normal criteria group. 5) The prevalence of hypertension in smokers was not significantly higher than that of nonsmokers. 6) The prevalence of hypertension in nonalcoholics was significantly lower that that of heavy alcoholics. 7) The prevalece of hypertension of nonexerciser was significantly lower than that of heavy exerciser. CONCLUSION: The prevalence of hypertension by classitication of JNC-5 at male workers was 16.4percent. Increasing age, shift work, overweight, high fasting blood sugar, high serum total cholesterol and triglycerides ad uric acid level, heavy alcohol drinking significantly increased prevalence of hypertension.