부산지역 중·고등학생 휴대전화에서 분리한 식중독균의 특성 연구 - 대장균, 황색포도상구균, 바실러스 세레우스를 중심으로 - (Study on the Characteristics of Food - borne Pathogens Isolated from Students’ Mobile Phones in Busan)

서지정보

· 발행기관 : 한국환경보건학회
· 수록지 정보 : 한국환경보건학회지 / 42권 / 4호 / 255 ~ 265페이지
· 저자명 : 박선희, 박연경, 황인영, 박혜영, 성경혜, 조현철

초록

Objectives: Mobile phones have become one of the most essential accessories in daily life. However, they mayact as reservoir of infectious pathogens if they are used without hygienic practices in their handling. Therefore,this study aimed to isolate food-borne pathogens from mobile phones and investigate the characteristics of toxingenes and antibiotic susceptibility patterns.
Methods: A total of 146 mobile phones were collected from 83 middle- and 63 high-school students in Busan.
The surfaces of the mobile phones were aseptically swabbed.
Results: Among the food-borne pathogens, Staphylococcus aureus, Bacillus cereus and Escherichia coli weredetected in 26 (17.8%), 20 (13.7%) and four (2.7%) samples, respectively. There were no statistically significantdifferences according to school level, gender or phone type. None of four E. coli strains had pathogenic toxicgenes. All of the B. cereus strains carried at least three different toxin genes among the nine enterotoxin andemetic toxin genes. Three out of 20 B. cereus strains (15%) possessed emetic toxin genes, which are rarelydetected in food-poisoning cases in Korea. Among the 26 strains of S. aureus, the detection rate ofstaphylococcal enterotoxin genes, toxic shock syndrome toxin (tsst) and factors essential for methicillinresistance (femA) were 84.6%, 7.7% and 100%, respectively. In the antibiotic susceptibility test, there was nomethicillin-resistant S. aureus (MRSA) or vancomycin-resistant S. aureus (VRSA).
Conclusion: The results show that students' mobile phones in Busan were contaminated by food-bornepathogens which carried various toxic genes. Therefore, regular phone disinfection and hand hygiene isimportant in order to reduce cross-contamination.

영어초록

Objectives: Mobile phones have become one of the most essential accessories in daily life. However, they mayact as reservoir of infectious pathogens if they are used without hygienic practices in their handling. Therefore,this study aimed to isolate food-borne pathogens from mobile phones and investigate the characteristics of toxingenes and antibiotic susceptibility patterns.
Methods: A total of 146 mobile phones were collected from 83 middle- and 63 high-school students in Busan.
The surfaces of the mobile phones were aseptically swabbed.
Results: Among the food-borne pathogens, Staphylococcus aureus, Bacillus cereus and Escherichia coli weredetected in 26 (17.8%), 20 (13.7%) and four (2.7%) samples, respectively. There were no statistically significantdifferences according to school level, gender or phone type. None of four E. coli strains had pathogenic toxicgenes. All of the B. cereus strains carried at least three different toxin genes among the nine enterotoxin andemetic toxin genes. Three out of 20 B. cereus strains (15%) possessed emetic toxin genes, which are rarelydetected in food-poisoning cases in Korea. Among the 26 strains of S. aureus, the detection rate ofstaphylococcal enterotoxin genes, toxic shock syndrome toxin (tsst) and factors essential for methicillinresistance (femA) were 84.6%, 7.7% and 100%, respectively. In the antibiotic susceptibility test, there was nomethicillin-resistant S. aureus (MRSA) or vancomycin-resistant S. aureus (VRSA).
Conclusion: The results show that students' mobile phones in Busan were contaminated by food-bornepathogens which carried various toxic genes. Therefore, regular phone disinfection and hand hygiene isimportant in order to reduce cross-contamination.

참고자료

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