LI Ying
Childrens Hospital Affiliated to Capital Institute of Pediatrics, Beijing 100020, ChinaLI Fengqin
National Health Commission Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment,Beijing 100021,ChinaJIANG Tao
National Health Commission Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment,Beijing 100021,ChinaLIU Xiang
Ningxia Centers for Disease Control and Prevention, Ningxia Yinchuan 750004, ChinaLEI Gaopeng
Sichuan Centers for Disease Control and Prevention, Sichuan Chengdu 610041, ChinaCHEN Yuzhen
Shandong Centers for Disease Control and Prevention, Shandong Jinan 250014, ChinaWU Lingling
Henan Centers for Disease Control and Prevention, Henan Zhengzhou 450016, ChinaXUE Chengyu
Heilongjiang Centers for Disease Control and Prevention, Heilongjiang Harbin 150030, ChinaHU Xiaoning
Gansu Centers for Disease Control and Prevention, Gansu Lanzhou 730000, ChinaDONG Yinping
National Health Commission Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment,Beijing 100021,China(1.Children's Hospital Affiliated to Capital Institute of Pediatrics, Beijing 100020, China;2.National Health Commission Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment,Beijing 100021,China;3.Ningxia Centers for Disease Control and Prevention, Ningxia Yinchuan 750004, China;4.Sichuan Centers for Disease Control and Prevention, Sichuan Chengdu 610041, China;5.Shandong Centers for Disease Control and Prevention, Shandong Jinan 250014, China;6.Henan Centers for Disease Control and Prevention, Henan Zhengzhou 450016, China;7.Heilongjiang Centers for Disease Control and Prevention, Heilongjiang Harbin 150030, China; 8.Gansu Centers for Disease Control and Prevention, Gansu Lanzhou 730000, China)
Objective A case-control study on Clostridium spp.contamination on infant population and infant formula powdered was carried out, the data on Clostridium spp. exposure in some parts of China was obtained. Methods Epidemiological information and samples were collected from 6 locations in 6 provinces in China. The isolation and identification, of Clostridium spp. were performed. Results Totally 501 infants were investigated. Among them, 247 were exclusive breastfeeding and 254 were mixed feeding. According to the month grouping, 367 were 0-6 months and 134 were 7-12 months. A total of 813 samples were collected. After testing, 246 strains of Clostridium spp. were obtained and the positive rate was 30.3% (246/813). C.sporogenes (8.4%,68/813), C.bifermentans (6.2%,50/813) and C.butyricum (4.6%,37/813) had the highest detection rate.37.3%(187/501) of the stool samples were Clostridium spp. positive, followed by 22.3%(27/121) of the infant formula powder, 19.5%(25/128) of the environmental swab and 11.1%(7/63) of the food samples. The detection rate of Clostridium spp. in mixed feeding group was significantly higher than that of breast-feeding group(χ2=40.833,P＜0.01), and 7-12-month-old group was significantly higher than that of 0-6 months group(χ2=27.829,P＜0.01). Conclusion There was a high exposure level of Clostridium spp. in food and environment in infant population in some parts of China.
LI Ying, LI Fengqin, JIANG Tao, LIU Xiang, LEI Gaopeng, CHEN Yuzhen, WU Lingling, XUE Chengyu, HU Xiaoning, DONG Yinping. A study on Clostridium spp. exposure level on infant population in some parts of China[J].中国食品卫生杂志,2020,32(2):165-170.
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