Table 4.
The distribution of Enterobacteriaceae as a function of sample group and season.
| Yoghurt samples/season | Frequency of occurrence | % of occurrence | Frequency of occurrence | % of occurrence | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gram negative bacteria isolated from yoghurt | Bamenda | Dschang | Bafoussam | Commercial | ||||||||
| (I) | (II) | (I) | (II) | (I) | (II) | (I) | (II) | (I) | (I) | (II) | (II) | |
| Pantoea sp. 1 | + | + | + | − | + | + | − | + | 3 | 75 | 3 | 75 |
| Pantoea sp. 3 | − | + | − | − | − | − | − | − | 0 | 00 | 1 | 25 |
| Pantoea sp. 4 | + | + | − | − | − | − | − | − | 1 | 25 | 1 | 25 |
| Raoultella ornithinolytica | + | − | − | − | − | − | − | − | 1 | 25 | 0 | 00 |
| Shigella sp. | + | + | − | − | + | − | + | − | 3 | 75 | 1 | 25 |
| Serratia plymuthica | + | + | − | − | + | + | − | − | 2 | 50 | 2 | 50 |
| Burkholderia cepacia | + | + | − | − | + | − | − | − | 2 | 50 | 1 | 25 |
| Providencia stuartii | + | + | − | − | − | + | − | − | 1 | 25 | 2 | 50 |
| Providencia rettgeri | − | − | + | + | − | − | − | − | 1 | 25 | 1 | 25 |
| Providencia alcalifaciens/rustigianii | + | − | − | − | − | − | − | − | 1 | 25 | 0 | 00 |
| Pseudomonas oryzihabitans | + | − | + | − | − | − | − | − | 2 | 50 | 0 | 00 |
| Moellerella wisconsensis | − | + | + | − | − | − | − | − | 1 | 25 | 1 | 25 |
| Klebsiella pneumonia ssp. pneumonia | − | − | + | + | + | − | + | + | 3 | 75 | 2 | 50 |
| Klebsiella oxytoca | − | − | − | − | − | + | − | − | 0 | 00 | 1 | 25 |
| Pasteurella pneumotropica/Mannheimia haemolytica | − | − | + | − | − | − | − | − | 1 | 25 | 0 | 00 |
| Ochrobactrum anthropi | − | − | + | − | − | − | − | − | 1 | 25 | 0 | 00 |
| Enterobacter aerogenes | − | − | − | − | + | − | + | − | 2 | 50 | 0 | 00 |
| Enterobacter cloacae | − | + | + | − | − | − | − | − | 1 | 25 | 1 | 25 |
| Citrobacter freundii | − | − | − | − | − | + | − | − | 0 | 00 | 1 | 25 |
| Escherichia coli 1 | − | − | − | − | − | + | − | − | 0 | 00 | 1 | 25 |
| Proteus penneri | − | − | − | − | − | − | − | + | 0 | 00 | 1 | 25 |
1The letters I and II refer to batches of the dry and rainy seasons, respectively; + = positive, − = negative.