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| HIV-1 | HIV-2 | ||||
| CD4+ T cell category, cells/ml | >500 | 200 - 500 | <200 | >500 | 200 - 500 | <200 |
| Mean weight (Kg) | 56.03 | 61.07 | 52.02 | 56.31 | 59.34 | 54.07 |
| Acute primary retroviral infection | 0 | 0 | 0 | 0 | 0 | 0 |
| Persistent generalised lymphadenopathy | 0 | 2 | 0 | 0 | 0 | 0 |
| WHO, 1990, Performance Scale: |
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| (a) | 21 | 21 | 15 | 25 | 20 | 17 |
| (b) | 5 | 4 | 10 | 3 | 3 | 6 |
| (c) | 0 | 0 | 2 | 0 | 2 | 2 |
| Diarrhoea ³ 1 mnth | 0 | 3 | 3 | 1 | 1 | 2 |
| Fever | 5 | 7 | 8 | 6 | 3 | 6 |
| Cryptococcal meningitis | 0 | 0 | 0 | 0 | 0 | 0 |
| Pulmonary tuberculosis | 1 | 0 | 3 | 1 | 0 | 0 |
| Extra-pulmonary tuberculosis | 0 | 0 | 0 | 0 | 0 | 0 |
| Kaposis sarcoma | 0 | 0 | 0 | 0 | 0 | 0 |
| Candidiasis (oral and/or esophagous) | 1 | 1 | 5 | 1 | 1 | 5 |
| Herpes zoster (shingles) | 0 | 1 | 0 | 1 | 0 | 0 |
| Weakness ³ 2 weeks | 0 | 0 | 4 | 0 | 2 | 2 |