Enterobacter sakazakii occasionally causes illness among premature babies and infants. In some previously described outbreaks, infant formula-contaminated during factory production or bottle preparation-was recognised as a source for bacterial colonisation; however the degree of wider environmental contamination is unknown.
Chantal Kandhai from Wageningen University, The Netherlands, and colleagues used a refined isolation and detection method to investigate the presence of E. sakazakii in various food factories and households. Environmental samples from eight of nine food factories and from a third of households (five of 16) contained the bacterium. The investigators comment that appreciation of the widespread nature of this micro-organism needs to be taken into account when designing preventive control measures.
In an accompanying Commentary (p 5), Jeffrey M. Farber from Health Canada concludes: "Current industry efforts to reduce the occurrence of E sakazakii have focused on improving hygiene practices, coupled with environmental monitoring and end-product testing for the organism. Since powdered infant formula is not sterile and there is the potential risk of contamination during preparation, there is a need for care when preparing and handling reconstituted powdered infant formulas. Health-care professionals should follow recommendations provided by public-health officials and organisations such as the American Dietetic Association, and be alert to possible modifications."
Contact :
Dr Chantal Kandhai, Wageningen University, Food Microbiology Group, PO Box 8129, 6700 EV Wageningen, Netherlands; T) 31-317-485358; F) 31-317-484978; E) chantal.kandhai@wur.nl
Dr Jeffrey M. Farber, Ph.D., Director, Bureau of Microbial Hazards, A.L. 2203G3, Food Directorate, Health Canada, Ottawa, Ontario, Canada K1A 0L2; T) 613-957-0880; F) 613-954-1198; E) Jeff_Farber@hc-sc.gc.ca
The Lancet