- Correlations Between Climate Change-Related Infectious Diseases and Meteorological Factors in Korea.
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Si Heon Kim, Jae Yeon Jang
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J Prev Med Public Health. 2010;43(5):436-444.
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DOI: https://doi.org/10.3961/jpmph.2010.43.5.436
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Infectious diseases are known to be affected by climate change. We investigated if the infectious diseases were related to meteorological factors in Korea. METHODS: Scrub typhus, hemorrhagic fever with renal syndrome (HFRS), leptospirosis, malaria and Vibrio vulnificus sepsis among the National Notifiable Infectious Diseases were selected as the climate change-related infectious diseases. Temperature, relative humidity and precipitation were used as meteorological factors. The study period was from 2001 through 2008. We examined the seasonality of the diseases and those correlations with meteorological factors. We also analyzed the correlations between the incidences of the diseases during the outbreak periods and monthly meteorological factors in the hyper-endemic regions. RESULTS: All of the investigated diseases showed strong seasonality; malaria and V. vulnificus sepsis were prevalent in summer and scrub typhus, HFRS and leptospirosis were prevalent in the autumn. There were significant correlations between the monthly numbers of cases and all the meteorological factors for malaria and V. vulnificus sepsis, but there were no correlation for the other diseases. However, the incidence of scrub typhus in hyper-endemic region during the outbreak period was positively correlated with temperature and humidity during the summer. The incidences of HFRS and leptospirosis had positive correlations with precipitation in November and temperature and humidity in February, respectively. V. vulnificus sepsis showed positive correlations with precipitation in April/May/July. CONCLUSIONS: In Korea, the incidences of the infectious diseases were correlated with meteorological factors, and this implies that the incidences could be influenced by climate change.
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Citations
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- Human Multi-route Exposure Assessment of Lead and Cadmium for Korean Volunteers.
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Eunha Oh, Eun Il Lee, Hosub Lim, Jae Yeon Jang
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J Prev Med Public Health. 2006;39(1):53-58.
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We wanted to evaluate the main route of exposure to lead and cadmium for the general population in Korea by using multi-route and multi-media exposure assessment METHODS: Samples of air at the homes, samples of the food and water and peripheral blood samples were collected from thirty volunteers living in Seoul (the metropolitan area), Yong-in (the suburban area) and Ansan (the industrial area) in 2001. Graphite furnace atomic absorption spectrometric methods were used for the determination of the Pb and Cd levels in the air, food, water and blood samples. RESULTS: The average intake of lead through the air, drinking water and food were 5.06 microgram/day (26.3%), 0.002 microgram/day (0.1%), and 16.4 microgram/day (73.6%), respectively. The average intake of cadmium through the air, drinking water and food were 0.082 microgram/day (0.9%), 0.001 microgram/day (0.007%), and 12.61 microgram/day (99.0%), respectively. The blood lead level was statistically higher in the male subjects than in the female subjects (3.39 and 2.22 microgram/dl, respectively), and only gender was a significant variable on the multiple regression analysis for blood lead. CONCLUSIONS: This study showed that the intake of lead and cadmium through food was the major route of exposure. A policy to reduce the pollutants according to the exposure routes should be established. However, more studies will be needed to support these data for the general population.
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Summary
- Exposure Assessment of PCDD/Fs and Monitoring of Health Effects on Workers and Residents near the Waste Incinerators in Korea.
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Jong Han Leem, Yun Chul Hong, Kwan Hee Lee, Ho Jang Kwon, Jae Yeon Jang
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Korean J Prev Med. 2003;36(4):314-322.
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In this study, the exposure status of the hazardous substances from incinerators, such as polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), were studied, and the relationship between the exposure of these hazardous substances and their heath effects on the workers and residents near municipal solid waste (MSW) incinerators and an industrial incinerator investigated. METHODS: Between July 2001 and June 2002, 13 workers at two MSW incinerators, 16 residents from the area around the two MSW incinerators, 6 residents from the control area, and further 10 residents near an industrial incinerator, estimated to emit higher levels of hazardous substances, were interviewed. Information, including sociodemographic information, personal habits, and work history, detailed gynecologic and other medical history were collected through interviews. Blood samples were also collected from 45 subjects, and analyzed for PCDD/DFs, by high resolution gas chromatography - high resolution mass spectrometry, using the US EPA 1613 method. In addition to the questionnaire survey, urinary concentrations of 8-hydroxydeoxyguanosine (8-OH-dG) and malondialdehyde (MDA) were measured as oxidative injury biomarkers. The urinary concentrations of 8-OH-dG were determined by in vitro ELISA, and the MDA by HPLC, using an adduct with thiobarbituric acid. RESULTS: The PCDD/DFs concentrations in the residents near the industrial incinerator were higher than those in the controls, workers and residents near the MSW incinerators. The average TEQ (Toxic Equivalencies) concentrations of the PCDD/DFs in residents near the industrial incinerator were 53.4pg I-TEQs/g lipid. The estimated daily intakes were within the tolerable daily intake range (1-4 pg I-TEQ/Kg bw/day) suggested by WHO (1997) in only 30% to the people near the industrial incinerator. Animal studies have already shown that even a low body burden of PCDD/DFs, such as 10ng TEQ/kg bw, can cause oxidative damage in laboratory animals. Our study also showed that the same body burden of PCDD/DFs can cause oxidative damage to humans. CONCLUSIONS: The exposures to PCDD/DFs and the oxidative stress of residents near the industrial incinerator, were higher than those in the controls, workers and residents near the MSW incinerators. Proper protection strategies against these hazardous chemicals are needed. Because a lower body burden of PCDD/Fs, such as 10ng TEQ/kg bw, can cause oxidative damage, the tolerable daily intake range should be restrictedly limited to 1pg I-TEQ/kg bw/day.
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- Dioxins and Health: Human Exposure Level and Epidemiologic Evidences of Health Effects.
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Jae Yeon Jang, Ho Jang Kwon
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Korean J Prev Med. 2003;36(4):303-313.
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- General information is summarized, that is necessary to introduce a scientific assessment of the human health and exposure issue concerning dioxin and dioxin-like compound. Scientific literatures were reviewed to assess the background exposures to the dioxin-like compounds for normal residents. Epidemiologic studies were also reviewed to assess malignant and nonmalignant effects of dioxins. In 1997, the International Agency for Research on Cancer classified 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD) as a human carcinogen, primarily based on occupational cohort studies. The US Environmental Protection Agency made the same decision in it's Draft Dioxin Reassessment. Epidemiologic evidences point to a generalized excess of all cancers, without any pronounced excess at specific sites. Reported non-cancer effects included a range of conditions affecting most systems. Among them, chloracne, elevation in gamma glutamyl transferase (GGT), and alterations in reproductive hormones are related to TCDD. Other adverse outcomes, such as lipid concentrations, diabetes, circulatory and heart diseases, immunologic disorders, neurobehavioral effects, and developmental outcomes require further study before their respective relationships to TCDD can be more definitively assessed.
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- The relationship between the utilization of health center and exposed amount to solvent by using cumulative exposure index.
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Ju Won Park, Soon Young Lee, Jae Yeon Jang, Kyung Jong Lee, Ho Grun Jeong
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Korean J Prev Med. 1998;31(3):404-413.
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- This study was conducted in order to clarify the factors affecting the number of utilization to health center for the shipyard workers who have been work in exposed environment to solvent. At first the tendencies of the number of utilization to health center in accordance with cumulative exposure(CE), lifetime weighted average exposure(LWAE), one's place of duty, work contents, states of using safety apparatus, the degree of the knowledge on handling solvents, exposure year. 1) The increase in the cumulative exposure(CE) was significantly higher in the number of utilization to health center. The group with longer exposure year showed significantly higher number of utilization to health center(p<0.01). Considering the work contents such as power blasting, spray, mixing and touch-up, the group of touch-up showed higher number of utilization to health center and this difference was statistically significant(p<0.001). Those who were not using the safety apparatus, showed higher number of utilization to health center, which was statistically significant(p<0.05). The degree of the knowledge on handling the solvent had no relation with using health center. 2) The results conducted from this study by multiple regression analysis in clarifying the factors affecting the number of utilization to health center, CE, exposure year and using safety apparatus was significant factor in utilization of health center.
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- Skin diseases of male workers in painting workplace.
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Jae Beom Park, Kyung Jong Lee, Jae Yeon Jang, Ho Keun Chung
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Korean J Prev Med. 1997;30(4):830-839.
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- Painting is risky work to occupational skin disease. This research was carried out to investigate the prevalence of occupational skin disease in painting department of a shipyard company in June 1996. Dermatological examination, self-administered questionnaire survey, compositional analysis of solvents used in painting and cleaning were conducted. Exposed group(n=379) was selected randomly in painting department and control group(n=151) was selected in those who had not exposed to paints or solvents. Exposed group was divided into two groups by substance to contact ; painters contact to paints and organic solvents and workers contact to cleaners mainly composed of organic solvents. The prevalence of contact dermatitis(11.9%) is significantly elevated compared with control group(2.6%), and age adjusted odds ratio(OR) is 4.95 (95% confidence interval[CI]: 1.75-14.03). The prevalence of Tinea pedis, the most common skin disease, in exposure group is 48.0%, and its age-adjusted odds ratio(OR) is significantly elevated compared with control group (OR:3.17, 95% CI:2.06-4.88). Pompholyx is also significantly elevated in prevalence(11.9%) and age-adjusted OR(OR:6.69, 95% CI:2.05-21.87). There were no difference in the prevalence of contact dermatitis, Tinea pedis, and pompholyx by use of protector, work type, and duration of employment in painting department. In exposure group, 71.1% suffer from contact dermatitis improved in vacation or holiday and 68.9% of them had lesion in exposed area, it suggest that contact dermatitis in exposed group is related to their work. In conclusion, workers in painting department have high risks of contact dermatitis, Tinea pedis, and pompholyx. A health policy should be provided to prevent skin disease among painting department.
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- Mutagenic Activity of Organic Pollutans in Drinking Water in Seoul.
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Dong Chun Shin, Jae Yeon Jang, Seong Joon Jo, Yong Chun
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Korean J Prev Med. 1988;21(2):284-294.
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- To measure the mutagenic activity of micro-organic pollutants in drinking water, mutagenic test was conducted using Salmnella typhimurium TA 98 strain on the water sample taken from three water supply station and six tap water in Seoul in July and November 1987. The results were as follows : 1. The average amounts of organic matters in raw, treated, and tap water sampled in July were 0.38mg/l, 0.28mg/l, and 0.45mg/l, respectively, and sampled in November were 0.34mg/l, 0.24mg/l, and 0.22mg/l, respectively. The amount of organic matters of tap water sampled in November did not increase while that of tap water sampled in July increased compare to those of raw or treated water. 2. The amount of organic matters is the highest in neutral fraction compare to acidic and basic fractions. 3. In the five out of six tap water and raw water of Paldang and Kuui station sampled in July, the mutagenic ratios were greater than two (both direct and indirect mutagenicity). 4. In the three out six tap water and raw and treated water of Kuui station sampled in November, the mutagenic ratios were greater than two. 5. While mutagenic were low in acidic and basic fraction, they were high in neutral fraction. The samples which had high mutagenic activity in the total amount also showed high mutagenic activity in neutral fraction. 6. While mutagenic activity was decreased after the treatment of water, it was increased in tap water as the distance from the water supply station increases.
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- An Assessment of Air Pollution using Pollutant Standards Index (PSI): 1983~1984 in Seoul.
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Yong Chung, Jae Yeon Jang, Sook Pyo Kwon
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Korean J Prev Med. 1986;19(1):65-75.
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- In order to assess the general health effect due to air pollution and to determine the critical pollutant which is meant by the worst effect to health among various pollutants in Seoul, air quality measurements at 10 sites during 1983~1984 were analyzed using Pollutant Standards Index (PSI): This index has been ultimately proposed to describe the comprehensive degree of the air pollution by U.S. Environmental Protection Agency(EPA) since 1976. Total average of PSI in Seoul during the two years was 139 that is described in "unhealthful". The highest PSI appeared in Winter 183 through the 2 years, the lowest in Summer 99, and Spring 129 and Fall 150 respectively. PSI in Deungchon dong and Seongsu dong which are industrial areas were very high in terms of "very unhealthful", while Shinlim dong was shown in low in terms of "good". TSP was a priority pollutant in Seoul as the most frequently occurring critical pollutant. Its frequency was 76.4% in Spring, 86.0% in Summer, 78.0% in Fall and 44.2% in Winter during the 2 years. In Winter, TSP X SO2 was an important term as the critical pollutant in Seoul. Oxidant was the most frequently occurring critical pollutant in Kwangwhamoon through the whole seasons. It was recommended that the PSI could be used to assess the air pollution administratively and legally in context with public health.
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