TABLE 1.

Concentrations of Vibrio cholerae O1 cells and phage excreted in the stools of cholera patients

Date	V. cholerae concn (CFU/ml)	Phage concn (PFU/ml)b	Identity of phagea
2 August 2004	4.5 × 105	2.7 × 104	JSF4
10 August 2004	2.7 × 105	1.8 × 103	JSF4
6 August 2004	5.7 × 106	2.0 × 104	JSF4
16 August 2004	3.3 × 105	8.1 × 105	JSF4
18 September 2005	3.7 × 105	3.5 × 104	JSF4
25 September 2005	3.2 × 106	7.8 × 105	JSF4
26 September 2005	1.2 × 105	1.1 × 104	JSF4
4 August 2006	3.0 × 105	4.5 × 104	JSF4
16 May 2007	2.0 × 105	2.2 × 105	JSF4
11 June 2007	3.0 × 106	5.7 × 107	JSF4
4 July 2007	2.3 × 106	3.0 × 106	JSF4
7 August 2007	1.4 × 106	2.0 × 105	JSF4 and JSF6
19 August 2007	2.4 × 107	1.5 × 104	JSF4
25 September 2007	3.4 × 105	3.8 × 106	JSF4
7 August 2004	5.0 × 105	<10
9 August 2004	3.4 × 106	<10
10 August 2004	1.6 × 107	<10
16 August 2006	3.4 × 105	<10
9 May 2007	3.4 × 106	<10
16 May 2007	8.0 × 106	<10
22 May 2007	6.2 × 106	<10
11 June 2007	2.4 × 106	<10
8 July 2007	6.0 × 108	<10
27 August 2007	1.6 × 106	<10
4 September 2007	6.4 × 106	<10
30 September 2007	8.3 × 106	<10
30 October 2007	8.0 × 106	<10

^aThe identity of each phage isolate was established by comparing its host specificity as well as the restriction pattern of its genome with that of previously described phages (5).

^bPlaque count of <10 means that no plaque was detected on plating of 100-μl aliquots of specimen. In theory, the concentration of phage should be <10 PFU/ml.