Skip to main content

Table 3 Quality of clinical and environmental samples collected

From: Investigation of a community outbreak of typhoid fever associated with drinking water

Samples

No. of samples (n)

Average total viable count* (CFU/ml or g)

Total coliform Count *^

Samples positive for SalmonellaTyphi (%)

Samples positive for fecal indicators# (%)

Clinical Samples (feces)

100

-

-

22

-

Well water samples

10

3 × 106 - 1 × 107

≥ 1800

100

100

Household water samples

90

5 × 104 - 4 × 107

≥ 1800

72

65

Cooked Food samples

50

2 × 103 - 1 × 104

0

2

0

  1. g = gram, CFU = Colony forming unit, * only for environmental samples, ^ was analyzed by MPN method, # fecal indicators include fecal E. coli and Fecal Streptococci.