Table 2

Points of water collection from Bogra (B) and Kishorganj (K)		Number of samples exceeding the maximum allowable limits¹,(Range of organisms)
		Total coliforms	Faecal coliforms	*Vibrio cholerae*	Aeromonas spp.	Pseudomonas spp.	*Salmonella/Shigella Spp.*
Tube well	B (N=2)	1 (0-500)	1 (0-1000)	0 (0)	Not done²	Not done²	Not done²
Tube well	K (N=2)	2; (0-2000)	2 (0-1000)	0 (0)	2 (1)	; (1)	0 (0)
Tap	B (N=8)	8 (4-60000)	6 (0-32000)	1 (V. Cholerae 01 Ogawa)	Not done²	Not done²	Not done²
Tap	K (N=2)	2 (130-176000)	2 (147-77000)	2 (V. Cholerae 01 Ogawa)	2 (1)	1 (1)	0 (0)
Municipal pump	B N=1)	1 (5)	0 (0)	0 (0)	1 (1)	0 (0)	0 (0)
Municipal pump	K (N=1)	1 (8)	0 (0)	0 (0)	1 (1)	0 (0)	0 (0)
Central pump	B	Not done²	Not done²	Not done²	Not done²	Not done²	Not done²
Central pump	K N=1)	1 (252)	1 (105)	0 (0)	1 (1)	1 (1)	0 (0)

¹Maximum allowable limit by World Health Organization’s Guideline is 0 CFU/100 ml for the following organisms: (Total coliforms, faecal coliforms, Vibrio cholerae, Aeromonas spp., Salmonella spp., Shigella spp., Pseudomonas spp.)
²Not done: the quantity of samples were insufficient for these tests

Table 2: Bacteriological test results of water samples collected from various sources from diarrhoea outbreak affected communities in Bogra and Kishorganj districts of Bangladesh during February and April 2011.