Jm. Ware et al., A new diagnostic problem: isolation of Escherichia coli O157 : H7 strains with aberrant biochemical properties, DIAG MICR I, 38(3), 2000, pp. 185-187
Over a five-year period (1995-1999) the Microbial Diseases Laboratory recei
ved 34 strains of E, coli O157:H7 each with a single aberrant biochemical p
roperty. In addition, 27 O157 strains with negative or delayed motility wer
e noted during the same time period. These observations suggest that there
may be an increased likelihood to misdiagnose O157:H7 infections using comm
ercial systems in the future due to increasing phenotypic variability. (C)
2000 Elsevier Science Inc. All rights reserved.