TABLE 1.

EIEC strains used in this study

Strain name	Serotype	Place of isolation	Yr of isolation	Sourcea	Original laboratory no.
M519	O124:H−	Argentina	Unknown	SHL	C906-91
M520	O28ac:H−	United States	Unknown	IEKC	C499-89
M2326	O124:H30	Unknown	Unknown	BML	R411/55
M2327	O136:H9	Unknown	Unknown	BML	111/55
M2328	O143:H−	Unknown	Unknown	BML	223
M2329	O144:H−	Unknown	Unknown	BML	1642-56
M2330	O152:H−	Unknown	Unknown	BML	1184-68
M2331	O28ac:H−	Unknown	Unknown	BML	152/82
M2332	O112ac:H−	Unknown	Unknown	BML	329/81
M2333	O124:H30	Unknown	Unknown	BML	I314
M2334	O144b	Unknown	Unknown	BML	6/84
M2335	O167b	Unknown	Unknown	BML	223/83
M2338	O136:H−	Brazil	1964	USP	FBC13601
M2339	O124:H7	United States	Unknown	USP	FBC12406
M2340	O143:H−	Brazil	1979	USP	FBC14302
M2341	O143:H−	Brazil	1985	USP	FBC14310
M2342	O144:H−	Brazil	1966	USP	FBC14402
M2343	O136:H−	Brazil	1977	USP	FBC13616
M2344	O124:H−	Brazil	1985	USP	FBC12436
M2345	O28ac:H−	Brazil	1977	USP	FBC2801
M2346	O28ac:H−	Unknown	Unknown	USP	FBC28
M2347	O164:H−	Brazil	1985	USP	FBC16406
M2348	O136:H−	Brazil	1977	USP	FBC13619
M2349	O29:H−	Brazil	1976	USP	FBC2901
M2350	O143:H−	Brazil	1986	USP	FBC14314
M2351	O167:H−	Brazil	1979	USP	FBC16702
M2352	O152:H−	Brazil	1964	USP	FBC15202
M2353	O135:H−	Brazil	1980	USP	FBC13501
M2354	O152:H−	Brazil	1965	USP	FBC15206
M2355	O124:H−	Brazil	1977	USP	FBC12405
M2356	O124:H30	Brazil	1977	USP	FBC12430
M2357	O164:H−	Brazil	1985	USP	FBC16405

^aSHL, State Health Laboratory, Perth, Australia; IEKC, International Escherichia and Klebsiella Centre, Copenhagen, Denmark; BRL, Biomedical Reference Laboratory, Fairfield Hospital, Melbourne, Australia; UPS, Universidade de Sao Paolo, Brazil.

^bH antigen form is not known.