TABLE 2.

Representative motility scores of E. coli isolates at 37°C after incubation for 18 and 96 h

Isolate no. or source (n = 26)aMotility scoreb in indicated medium after indicated incubation time (h)
NBATBATSBAMIO
1896189618961896
99422223244
F454612334444
E001912224444
Hamburger01010122
H173012124444
Cider00000000
Salami22224444
ATCC 4389422224444
ATCC 4388912234444
ATCC 4388833334444
ATCC 70037500000000
ATCC 435011112444
ATCC 3161900000001
ATCC 1201401000001
ATCC 2351412223344
ATCC 2354500000001
ATCC 2351300000001
36E111224444
43E123234444
142E111114444
161E133224444
309E122114444
384E122224444
386E112114444
427E122224444
436E122224444
  • a Salmonella serovars and E. vulneris (data not shown) exhibited luxuriant growth in the four media evaluated.

  • b 0, no growth beyond stab inoculation line; 1, little growth beyond stab inoculation line; 2, extensive growth occupying about one-third of medium; 3, more extensive growth occupying about two-thirds of medium; 4, luxuriant growth covering more than two-thirds of medium. Scores represent mean scores for two determinations; there was very little deviation, and thus standard deviation values were not included.