| Nationwide surveillance for pathogenic microorganisms in groundwater near carcass burials constructed in South Korea in 2010 |
|---|
|
학술지명 J. Environ. Res. Public Health
저자 이규철,정하경,한상하,박수정,정원화,안태석,이중복,정용석,장경립,이옥재,박정웅,백순영
발표일 2013-12-12
|
|
Widespread outbreaks of foot-and-mouth disease and avian influenza occurredin South Korea during 2010. In response to the culling of many animals to attenuate thespread of disease, South Korea used mass burial sites to dispose of the large number ofcarcasses; consequently, concerns about groundwater contamination by leachate from theseburial sites are increasing. Groundwater is one of the main sources of drinking water,and its cleanliness is directly related to public health. Thus, this study aimed to evaluate thesafety of groundwater around the burial sites (total of 600 sites). A total of 1,200groundwater samples were collected though the country, and microbial analysis wasconducted during two time periods: during the spring (n = 600; April to June 2012) andafter rainfall (n = 600; August to October, 2012; fall). Fecal coliform and Escherichia coliwere detected in 173 (14.4%) and 85 (7.1%) of the 1,200 samples, respectively.Salmonella spp. and Shigella spp. each were detected only once (0.083%).Clostridium perfringens was detected from 7 groundwater samples (0.583%), and E. coliO157:H7 was not detected. With respect to norovirus, only the GII type was detected fromsix groundwater samples (0.5%), and enterovirus was detected in 15 groundwater samples(1.25%). The frequency of E. coli that we detected was lower than that found in previousstudies conducted in South Korea, but we detected higher frequency of fecal coliform thanthat observed in a previous report. The contamination frequencies of Salmonella spp.and Shigella spp. were very low, but C. perfringens, which could be an indicator of fecalpollution, was detected in seven regions. Overall, the results of the present study indicate alow possibility of contamination from burial sites. However, consistent monitoring isrequired to prevent microbial contamination of groundwater near the burial sites. |