- The Seroprevalence of Toxoplasma gondii Infection in Teachers of Child-bearing Age in Cheju Island.
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Jong Myon Bae, Hyun Jong Yang, Seong Chul Hong
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Korean J Prev Med. 2001;34(4):444-446.
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- OBJECTIVES
Toxoplasmosis is a member of the zoonosis group and may cause congenital infection. Antibody positive rates of toxoplasmosis were examined in high school students in Cheju, Korea to facilitate the study aim of examining the seroprevalence of Toxoplasma gondii in school teachers of child-bearing age in Cheju Island. METHODS: The study population comprised teachers of child-bearing age in primary, middle and high schools, aged 35 years and younger, who wished to be tested for Toxoplasma gondii antibodies (IgG) by the indirect latex agglutination test (ILA) and the enzyme-linked immunosorbent assay (ELISA) method. RESULTS: The overall antibody positive rate was 3.8% in the study subjects (n=314), a rate which showed no significant difference due to birth place, history of bringing up pets, or history of contacting a cat. CONCLUSION: We confirmed that the seroprevalence of Toxoplasma gondii in a population of child-bearing teachers in Cheju Island was the same as that previously reported in other parts of Korea.
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- A Survey of the Prevalence of Rubella Antibodies in Teachers of Child Bearing Age on Cheju Island .
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Jong Myon Bae, Hyun Jong Yang, Seong Chul Hong
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Korean J Prev Med. 2000;33(3):280-284.
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- BACKGROUND
Congenital rubella syndrome (CRS) can be controlled by vaccination. Because rubella is typically a childhood disease, occurring predominantly in the 5 to 14 year age group, female school teachers may be a high-risk population for CRS. CONCLUSIONS: To determine the prevalence rate of rubella antibodies in school teachers of child bearing age. METHODS: The study population consisted of primary, middle and high school teachers of child bearing age. The subjects were aged 35 years and younger, and consented to immunoglobulin (Ig) level testing using the ELISA method. RESULTS: The positive rate of IgG was 77.9% in the study subjects (n=314). Sixty-three teachers (21.4%) were susceptible to rubella infection. Thirty-seven teachers (11.8%) had a history of rubella vaccination. Among the female teachers with no vaccination history, the proportion of negative IgM and IgG was 21.7%, and the proportion of positive IgM was 2.9%. Seventy-nine percent of the study subjects did not know that they should not become pregnant for three months after receiving the rubella vaccine. CONCLUSION: School teachers of child bearing age should be considered a high risk group for CRS, and should be vaccinated if they are found to be seronegative.
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- Seroprevalence and Risk Factors of Toxoplasma gondii Infection in High School Students in Cheju Province .
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Seong Chul Hong, Hyun Jong Yang, Jong Myon Bae, Hyun Sik Choi, Hwan Sik Hwang, Hoon Kyu Oh, Dong Hyun Yun
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Korean J Prev Med. 2000;33(3):271-279.
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- OBJECTIVES
To assess the seroprevalence and risk factors of toxoplasmosis in high school students in Cheju Province, Korea. METHODS: A total of 4,570 high school students from 18 schools in Cheju Province were investigated for Toxoplasma gondii antibodies(IgG) by enzyme linked immunosorbent assay (ELISA). Risk factors for toxoplasmosis, such as place of residence, type of house, contact with cats and other pets, and rare meat consumption, were examined by questionnaire. RESULTS: The overall antibody positive rate was 5.5% and ranged from 2.6 to 11.5% by school. There was no significant difference between males and females. Statistical analyses of the questionnaire data indicated that the risk factors for seropositivity were: (1) birth place (Cheju/others), (2) place of residence (rural/urban), (3) dietary habits (vegetarian/non vegetarian), (4) eating rare meat, (5) exposure to pets and (6) hepatitis B. CONCLUSION: We confirmed that the prevalence of the anti-Toxoplasma gondii antibody in a population of high school students in Cheju Province was to the previously reported prevalence.
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Summary
- Evaluation of factors affecting sensory neural hearing loss.
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Seong Chul Hong, Seong wook Bae, Jong Young Lee
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Korean J Prev Med. 1998;31(2):249-264.
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- Reports on a potential relationship between sensory neural hearing loss(SNHL) and cardiovascular or hematologic factor show that the results are controversial. A detailed analysis of risk factors in the development of SNHL was carried out in 3,050 non-noise exposed healthy worker. The mean hearing threshold of both ears at 500, 1000, 2000, 4000, 8000Hz was measured and the effect of age, possible cardiovascular risk factor and hematologic factor (blood viscosity and hemostatic factors) on SNHL were evaluated. First, each of these were associated with loss of hearing sensitivity when univariately and multivariatively analysed. In a multiple regression model, age, sex, body mass index, WBC and total cholesterol level were independently associated with the mean of hearing sensitivity decrease at 4000 and 8000Hz. Second, study subjects were divided into two group (normal vs SNHL) and we compare the possible risk between both groups, and analysed univariate and multivariative logistic model. In a multiple logistic regression model, age, sex, body mass index, WBC and total cholesterol level, total protein, platelet were independently associated with SNHL. Our results show that we have some reliable indices of susceptibility to SNHL using cardiovascular measures or biochemical factor, but future, more extensive studies are required.
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