TABLE 2.

Survival of desiccated bacteria after storage at 4°C in dried paper disks

Strain no.	Bacterial group	Log10 CFU/disk
		Inocu- lated	Surviving	Surviving after storage for:
				5-10 days	20-40 days	7-9 mo	22-24 mo
1	Salmonella spp.	6.95	4.52	4.32	4.66	4.40	4.52
2		7.00	3.49	3.88	3.40	3.15	2.95
3		6.93	3.96	4.08	4.28	4.11	4.08
4		6.93	4.43	4.53	4.48	4.77	3.98
19	STEC O157	6.93	4.04	4.26	4.32	4.28	4.36
20		6.85	4.51	4.45	4.45	4.26	4.18
21		7.78	5.40	4.93	5.08	4.34	3.85
28		6.90	4.68	4.04	3.99	4.08	4.00
31		7.57	5.23	5.23	5.00	4.32	3.94
34	STEC O26	7.57	5.26	4.67	4.72	4.28	4.36
35		7.48	4.15	3.04	3.94	3.18	<2.00
36		7.00	3.64	3.65	3.72	3.45	3.49
46		7.00	4.85	4.66	4.83	3.96	3.34
47		6.81	3.95	4.00	3.97	3.99	4.23
49	STEC O111	7.51	5.04	4.91	4.87	5.04	4.18
50		7.28	3.71	3.71	3.72	<2.00	<2.00
51		7.04	4.08	4.00	3.99	3.38	2.30
52		6.90	4.63	4.59	4.32	3.00	2.60
53		6.78	4.59	4.49	4.08	3.58	<2.00
59	Nonpathogenic E. coli	6.90	4.08	4.00	4.08	4.08	3.79
60		7.56	3.30	3.18	2.93	<2.00	NTa
61		7.18	3.87	3.54	3.08	<2.00	NT
62		7.00	3.60	3.34	2.70	<2.00	NT
63		7.15	3.63	3.54	<2.00	NT	NT
64		7.70	3.38	2.60	<2.00	NT	NT

^aNT, not tested.