TABLE 1.

Inhibitory spectrum of enterocoliticin

Organism	Sourcea	Strain properties	No. of strainsb
			Tested	Susceptible
Y. enterocolitica	RKI, IP	Serogroup O:3	37	37
Y. enterocolitica	RKI, IP	Serogroup O:5,27	5	5
Y. enterocolitica	RKI, IP	Serogroup O:9	10	10
Y. enterocolitica	RKI, IP	Serogroup O:8	7	0
Y. enterocolitica	RKI, IP	Biogroup 1A, various serogroups, n.t.c	10	2
Y. pseudotuberculosis	RKI, IP	Serogroups I–VII	10	0
Y. intermedia	RKI, IP	Various serogroups, n.t.	13	2
Y. kristensenii	RKI, IP	Various serogroups, n.t.	10	1
Y. frederiksenii	RKI, IP	Various serogroups, n.t.	10	4
Y. mollaretii	RKI, IP	Various serogroups, n.t.	13	3
Escherichia coli	RKI	K-12, various serogroups	28	0
Salmonella enterica serovar Typhimurium	RKI	LT1, LT2, LT3	3	0
Salmonella enterica serovar Enteritidis	RKI		1	0
Salmonella enterica serovar Derby	RKI		1	0
Proteus mirabilis	RKI	Tetracycline resistant	1	0
Shigella dysenteriae	RKI	Type 2	1	0
Citrobacter freundii	RKI		1	0
Shigella sonnei	RKI		1	0
Enterobacter cloacae	RKI		1	0
Vibrio harveyi	DSM 2332, DSM 6904		2	0
Pseudomonas fluorescens	ATCC 6538		1	0
Pseudomonas aeruginosa	ATCC 15492, ATCC 27853		2	0
Micrococcus luteus	ATCC 4698		1	0
Staphylococcus aureus	ATCC 25923, ATCC 6538		2	0
Bacillus subtilis	ATCC 9372		1	0
Streptococcus faecium	DSM 2146		1	0

^aAbbreviations: RKI, strain collection of the Robert Koch Institute; IP, strains from the Institute Pasteur, Paris, France. 

^bTests were repeated three times for Yersinia strains by spotting a twofold serial dilution of enterocoliticin and incubating at 37°C. (The highest enterocoliticin activity was 8.8 × 10⁻⁵ AU ml⁻¹, determined on the reference strain Y. enterocolitica 13169). All other bacteria were tested twice. 

^cVarious serogroups, n.t., strains belonging to various serotypes, some strains not typeable with standard sera.