• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제25권1호
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• pp.41-51
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• 2022

Purpose: Community-acquired bacterial enteritis (CABE) is a common problem in developed countries. It is important to understand the epidemiologic changes in bacterial pathogens for prevention and treatment. Therefore, we studied the epidemiologic changes in CABE in Korean children. Methods: A total of 197 hospitalized pediatric patients aged <19 years that presented with dysentery symptoms and showed positive polymerase chain reaction results for bacterial species in stool samples, were enrolled in this study for 10 years (June 2010 to June 2020). We classified patients in phase I (06, 2010-06, 2015) and phase II (07, 2015-06, 2020) and analyzed their epidemiologic and clinical characteristics. Results: The most common pathogens were Campylobacter species (42.6%) and Salmonella species were the second most common pathogens (23.9%). The abundance of pathogens decreased in the following order: Clostridium difficile (9.6%), Shigella (5.6%), and Clostridium perfringens (5.6%). Escherichia coli O157:H7 was found to be the rarest pathogen (2.0%). Campylobacter species showed an increase in the infection rate from 32.1% in phase I to 49.6% in phase II (p=0.0011). Shigella species showed a decline in the infection rate in phase I from 14.1% to 0.0% in phase II (p<0.001). C. difficile and C. perfringens showed an increase in infection rate in phase II compared to phase I, but the difference was not statistically significant. Conclusion: The infection rate of Campylobacter species in CABE has been rising more recently, reaching almost 50%. This study may help establish policies for prevention and treatment of CABE in Korean children.

• 성인간호학회지
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• 제22권5호
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• pp.466-476
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• 2010

Purpose: The purpose of this study was to examine the under-reporting rate and related factors after blood and body fluid (BBF) exposure among hospital employees. Methods: Fifteen hundred l employees were conveniently sampled from ten university and acute care hospitals. The survey questionnaire consisted of 37 items. Data were collected from September 10 to November 30, 2008. Results: The survey response rate was 88.7%. The 47.9% (638/1,331) of hospital employees were exposed to BBF and the mean number of exposure was $4.7{\pm}5.942$ within the previous year. Under-reporting rate after BBF exposure was 69.4% (443/638). By multi-variate logistic regression analysis, the exposure number, exposure type, infectious disease and hospital were independently related to the under-reporting of BBF among hospital employees. Conclusion: The under-reporting rate after being exposed to blood and body fluids was relatively high. To address this problem, educational programs are needed to decrease the under-reporting rate for healthcare workers. Further, it might be helpful if other factors related to under-reporting be investigated in future studies.

• International Journal of Industrial Entomology and Biomaterials
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• 제17권2호
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• pp.173-180
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• 2008

The influence of temperature and relative humidity in infection and cross-infection of Nosema bombycis and N. mylitta respectively in mulberry silkworm, Bombyx mori L. on larval mortality, multiplication of pathogens, larval weight and growth rate in three different seasons were studied. Seasons were selected in such condition, when very less fluctuations between minimum and maximum temperature and minimum and maximum relative humidity ($25{\sim}28^{\circ}C$ and $65{\sim}72%$ R.H) was observed i.e., season-1. Fluctuations between minimum and maximum temperature were less ($28.05{\sim}34.50^{\circ}C$) but R.H % was more ($55{\sim}81%$) in season-2. Fluctuations between minimum and maximum temperature and R.H % were more ($20.00{\sim}40.5^{\circ}C$ and $64.00{\sim}90.00%$) in season-3. Growth rate of microsporidian-infected silkworm is directly related to the prevailing temperature and relative humidity in silkworm. Silkworm can tolerate slight variation of temperature but slight variation of relative humidity disfavours the development of silkworm and favours the multiplication of pathogens.

• 대한수의학회지
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• 제29권1호
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• pp.51-55
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• 1989

A survey on the prevalence of internal parasites in the laboratory rats in the Chonnam and Kyunggi areas was carried out. A total of 208 rats was selected for necropsy and the parasites were collected from the organs and the fecal samples. The infection rate of the internal parasites was high as 63.9% and eight species of parasites were identified. Among the species identified A tetraptera(21.6%) and H diminuta(20.7%) appeared with relatively higher infection rates than any other species identified. A significant difference in numbers of parasites was recognized between the regions as 8 species in Chonnam and 4 species in Kyunggi. The laboratory rats reared in stainless steel cage showed the higher infection rate than those in polycarbonate cage, with some exception in H spumosa and H nana. In this survey T crassicauda was firstly in the laboratory rats in Korea.

• 대한의생명과학회지
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• 제29권4호
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• pp.314-320
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• 2023

The purpose of this study was to provide basic data on hepatitis B infection control in the community through the results of the hepatitis B surface antigen and antibody tests conducted at the Cheongyang-County Health Medical Center. From 2012 to 2020, we retrospectively analyzed the HBsAg, HBsAb, HBeAg, HBeAb, and HBV DNA results of 7,329 hepatitis B-related testers. Among 7,329 subjects, the HBsAg positivity rate was 1.7%, and the positivity rate according to age was the highest at 4.4% in their 30s, 4.2% in their 40s, 4.1% in their 50s, 2.0% in their 60s, 1.9% in their 70s and over, and 10 it was shown in the order of 0.3% from less than large. The HBsAb positivity rate was 43.1% for men, 38.2% for men, and 46.7% for women (P<0.001). To summarize the above results, for infection control of hepatitis B in Cheongyang-County, hepatitis surface antigen proton management is required for those in their 30s or older, and it is thought that efforts to acquire immunity are necessary for those in their 20s or younger.

• 한국동물위생학회지
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• 제20권1호
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• pp.47-53
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• 1997

We have investigated the prevalence of canine heartworm (Dirofilaria immitis) infection among 100 mixed-breed dogs raised in Chonnam Province (Koheung, Posung, Changheung, and Hwasoon) and 100 dogs randomly selected from visiting dogs to the College of Veterinary Medicine, Chonnam National University for routine physical examination. Blood samples taken from dogs were examined for the presence of Dirofilaria immitis microfilaria by the modified Knott's test, and an antigen test which was based on the sandwich ELISA(DiroCHEK(equation omitted), Synbiotics, Inc., San Diego, California, USA) was used to detect the adult heartworm-specific antigen from serum samples. The results were then compared with those of the modified Knott's test. Five(2.5%) of the 200 examined dogs were microfilaria-positive, while 8 dogs(4%) were anti-gen-positive, which suggested that the antigen test was more sensitive than the microfilarial test in detecting heartworm infection. All dogs that were microfilaria-positive were also antigen-positive. The place of origin of the heartworm-positive dogs were of Naju (4/26, 15.4%), Koheung(3/32, 9.4%), and Hwasoon (1/19, 5.3%), while none of dogs raised in Kwangju, Posung, and Changheung areas were infected with the parasite. Although not significant, more infected dogs were observed in older ages, while the difference in infection rate between male (4/98, 4.1%) and female (4/102, 3.9%) was not recognized. Our results indicated that a relatively low infection rate was observed in dogs raised in Kwangju and Chonnam area compared to the infection rate reported previously in other areas of South Korea.

• 한국임상수의학회지
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• 제8권2호
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• pp.153-156
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• 1991

경기도의 19부락에서 1989년 5월에 459두와 그해 11월에 446두의 소를 대상으로 하여 렙토스피라 감염유무를 조사하였다. 혈액배양에서는 포모나 항체에 강하게 반응하는 한 균주만이 검출되었다. 몇개의 표준균주를 사용한 혈청검사에서는 5월에 12%, 11월에 26%의 양성율을 나타내었다. 년령이 증가함에 따라 양성율이 높아졌으며 숫소가 암소보다 높았다. 혈청검사 양성과 소의 유산력과는 유의적인 관계가 인정되지 않았다.

• 농촌의학ㆍ지역보건
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• 제7권1호
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• pp.43-49
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• 1982

Clonorchiasis sinensis is one of the most important endemic diseases in Korea, and this disease has been known to be one of public health concern in many areas of Korea. This survey was undertaken to evaluate the status of clonorchiasis in Yeoju Gun, Gyeong-gi Do from July to September 1980. A total of 1,194 male students were examined by intradermal test with Clonorchis antigen. In order to detect Clonorchis egg, the stool examinations were undertaken to 1,158 students, and the intensity of the Clonorchis infection was estimated by the Stoll's egg count. The prevalence rate was reanalyzed by the regional groups for an investigation of regional characteristics of infection. The following results were obtained in this survey. 1) Among 1,194 students in Yeoju Eup, positive rate of intradermal test with C. sinensis antigen was 17.2 percent. (middle school14.6% and high school 20.1%). 2) In the examination of 1,158 stool specimens, Clonorchis eggs were found in 97 (8.4%) cases. 3) Mean E.P.G. of Clonorchis infected case was $1,330{\pm}2,620$. 4) The degree of the intensity of Clonorchis infection by E.P.G. count was distributed as 73.6% in light infection (100-999), 22.6%, in moderate infection (1,000-9,999), and 3.8% in heavy infection (10,000-29,999). 5) High prevalence rate of Clonorchis sinensis was found in the Sang-Ri(9,3%) and Ha-Ri(8.4%) in Yeoju Eup. Neighbouring Bugnae Myun (11.5%), Gangcheon Myun(12.1%) and Neungseo Myun (11.1%) adjacent to the river had a similary high prevalence of C. sinensis.

• 대한간호
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• 제34권1호
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• pp.74-87
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• 1995

This study was to investigate the current prevention Mechanism of tuberculosis infection and to find out how nursing teachers handle against tuberculosis infection. The objectives of this study was to aid in better treatment and maintenance of those infected-students and help students to prevent the disease by themselves. The subjects of this research were 78 students who were proved to be infected at tuberculosis by the test result of each high school and 35 nursing teachers who retain those 78 infected students. The results of this study were as follows: 1. The infection rete of tuberculosis and the general characteristics of the infected students at Girls' High School: There are approximately 33 and 50 tuberculosis-infected cases in 1992 and 1993. The tuberculosisinfection rate were 0.12% in 1992, while the infection rate were 0.17% in 1993. The infection rate for academic Girls' High School stucents were 51.3%, while that of vocational Girls' High school students were 48.7%, About 30.8% of respondents have a family history of tuberculosis infection. 2. The current management system of tuberculosis treatment: It was reported that 59.0% of respondents out of total cases were in the process of treatment, and 41% of them were recovered (from tuberculosis). 55.1% of respondents use health center as their most frequent treatment location. 57.5% of academic Girls' High School and 47.4% of vocational Girls' high shool reported inconsistent meals while curing tuberculosis. In terms of taking medicine, 55.1% reported inconsistently. 3. The current management system of nursing teachers; Approximately 57.1% of nursing teachers were at academic Girls' High School. while 42.9% were at vocational Girls' High School. While treating tuberculosis, 85.7% of nursing teachers checked the consistent medicine-taking, 54. 3% of them checked the side effects of medicine, 80% of them consulted with students, while only 25. 7% of them check the school attendance. This study also finds out that we have underestimated the importance of tuberculosis treatment and health education at the shool level, it has not been effective enough for students to recognize the importance of tuberculosis. It is our assertion that nursing teachers should have paid much more attention to tuberculosis itself and infected-cases.

• 대한의생명과학회지
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• 제22권2호
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• pp.37-45
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• 2016

High risk human papillomavirus (HR-HPV) is major risk factor for uterine cervical cancer. There are approximately 15 types of HR-HPV. Liquid based cytology samples (116 samples) with high grade cervical lesions belonging to cervical intraepithelial neoplasia (CIN) 2, CIN 3, carcinoma in situ (CIS) and squamous cell carcinoma (SCC) were used after histologic confirmation. HR-HPV genotype assay was conducted using DNA chips. The HR-HPV infection rate was 81.9% with SCC samples showing the highest HR-HPV infection rate of 31%. CIN 3, CIS and CIN 2 showed infection rates of 25%, 16.4% and 9.5%, respectively. According to age with HR HPV infection rate, the 30~39 years-old group showed the highest infection rate by 92.3%. According to distribution with HR HPV genotyping, HPV 16 showed the highest infection rate by 42.3% whereas HPV 33 and HPV 58 showed infection rates of 11.7% and 10.8%, respectively. HPV 18 which is the second most common infected HPV genotype in the world showed 3.6%. Of the three most common oncogenic HR-HPV genotypes in CIN 2, we detected HPV 16, 35, 58; CIN 3 was HPV 16, 33, 58; CIS was HPV 16, 58, 33 (35/52); and SCC was HPV 16, 33, and 18 (31/52/58). Among the HPV 18, CIN 2, CIN 3, CIS and SCC showed 0.9%, 0.9%, 0% and 1.8%, respectively. The most often used preventive vaccines for cervical cancers use HPV 16 and HPV 18 as targets. However, results derived from this study suggest that a preventive vaccine against HPV 16 and HPV 18 would not be optimal for populations in this study.