Risk of Shiga Toxigenic Escherichia coli O157:H7 Infection from Raw and Fermented Milk in Sokoto Metropolis, Nigeria

Table 5

Frequency of Escherichia coli O157:H7 isolates from raw milk in two Local Government Areas (LGAs).

LGA	Number of samples positive for Escherichia coli O157:H7	Number of samples negative for Escherichia coli O157:H7	Total
Sokoto North	2	6	8
Sokoto South	1	2	3
Total	3	8	11

= 0.998, OR = 1.50, (95% CI: 0.084–26.86), OR: odds ratio, CI: confidence interval, and LGA: Local Government Area. Wamakko LGA was not included in the analysis as none of the samples from the area were positive for Escherichia coli O157:H7.