| Area sampled | Origin/No. of colonies | Total (%) | Characterization of colonies | Prevalence in soil/water (χ2) | P-value | Man-Whitney test (Concentration of colonies in Faculties) | P-value | |
| Water (%) | Soil (%) | |||||||
| Faculty of Agriculture | 2 (1.85) | 3 (2.78) | 5 (4.63) | A. castellannii | 7.6 | 0.0058 | 16.5 | 0.243 |
| Faculty of Medical Sciences | 1 (0.93) | 4 (3.70) | 5 (4.63) | A. castellannii | ||||
| Faculty of Arts | 2 (1.85) | 4 (3.70) | 6 (5.56) | A. castellannii | ||||
| Faculty of Natural Sciences | 7 (6.48) | 12 (12.04) | 19 (18.52) | A. castellannii | ||||
| Faculty of Education | 5 (4.63) | 11 (10.19) | 16 (14.82) | A. castellannii | ||||
| Faculty of Engineering | 4 (3.70) | 5 (4.63) | 9 (9.33) | A. castellannii | ||||
| Faculty of Law | 3 (2.78) | 6 (5.56) | 9 (8.33) | A. castellannii | ||||
| Faculty of Pharm. Sciences | 3 (2.78) | 3 (2.78) | 6 (5.56) | A. castellannii | ||||
| Faculty of Veterinary Medicine | 6 (5.56) | 4 (3.70) | 10 (9.52) | A. castellannii | ||||
| Faculty of Social Sciences | 8 (7.41) | 4 (3.70) | 12 (11.11) | A. castellannii | ||||
| Faculty of Environmental Sciences | 4 (3.70) | 6 (5.56) | 10 (9.52) | A. castellannii | ||||
| TOTAL | 45 (41.67) | 63 (58.3 | 108 (100) |
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