| Blood Group | Apparently healthy neonates (Control) | Neonates with PUO (Test) | ||
| No | % | No | % | |
| Group O | 12 | 60.0 | 49 | 61.3 |
| A | 5 | 25.0 | 15 | 18.7 |
| B | 2 | 10.0 | 4 | 17.5 |
| AB | 1 | 5.0 | 2 | 2.5 |
| Total | 20 | 100.0 | 80 | 100.0 |