Table 1.

Strains used in this study

EAggEC or CDEC strainSerotypeAA probeaHly presence or absencecPCR band (hlyA)dLDH releaseeIL-1β releasee
O42O44:H18+
17-2O3:H2+++++
JM221O92:H33+
69H77-1
52H72.2NDbNDND
DS244R3+NDND
WC216-1-1R:H27+NDND
WC201-1-4O81:NM+ND
H32-1ND
Thai501-1-1Rough+ND
DS65-R3NDND
81H194-2+NDND
54H-191-1+NDND
697 (WRAIR)ND++++
55-3 Hly+(CDEC)O6:HND+ (two copies)+++
55-3 Hly(CDEC)ND
  • a AA probe refers to a specific DNA probe present in some but not all EAggEC strains (see references3 and 7).

  • b ND, not determined.

  • c Hly determined on blood agar plates.

  • d hlyA determined by PCR amplification withhlyA primers.

  • e LDH activity and IL-1β release were determined with both HMDM and J774 cells.