Table 1.

Fig. 2. Bacteriophages productivity scores per induction method among the 47 STEC O157:H7 isolates

Bacteriophages infectivity scores	Ultraviolet light	Virginiamycin	Josamycin	Flavophospholipol	Poly 2-propenal 2-propenoic acid	Spontaneous
0 (0 plaques)	4 (16%)	5 (31,3%)	2 (12,5%)	1 (7,1%)	12 (60%)	0
1+ (< 5 plaques)	2 (8%)	4 (25%)	0	5 (35,7%)	1 (5%)	0
2+ (5 to 10 plaques)	15 (60%)	4 (25%)	10 (62,5%)	4 (28,6%)	2 (10%)	6 (85,7%)
3+ (> 10 plaques)	4 (16%)	3 (18,8%)	4 (25%)	4 (28,6%)	5 (25%)	1 (14,3%)
Total induced bacteriophages	25/47	16/47	16/47	14/47	20/47	7/47