| Source of knowledge | Frequency (n) | Percentage (%) |
| Lectures | 284 | 79.8 |
| Friends | 44 | 12.4 |
| Mass Media | 28 | 7.9 |
| Potential source of infection | Frequency (n) | Percentage (%) |
| Needle stick injuries | 174 | 42.9 |
| Sexual exposure | 82 | 20.2 |
| Faeco-Oral | 10 | 2.5 |
| Air-borne | 4 | 1.0 |
| Contact with Hospital equipment | 80 | 19.7 |
| Contact with patients | 56 | 13.8 |