| HIV disease category | CD4 0 - 12 months old | CD4 1 - 5 years old | CD4 6 - 12 years old |
| Category 1―no damage | over 1500 | over 1000 | over 500 |
| Category 2―moderate | 750 - 1500 | 500 - 1000 | 200 - 500 |
| Category 3―severe | Less than 750 | Less than 500 | Less than 200 |