Consider the following statements:
| I: | HIV is a retrovirus. |
| II: | It infects and destroys the CD4 T-lymphocytes. |
| III: | The newer antiretroviral drugs are a cure for HIV infection. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Which of the following is not a characteristic of HIV?
| 1. | It mutates rapidly developing new strains. |
| 2. | It is a retrovirus with two short strands of ss RNA. |
| 3. | It cannot pass through blood-brain barrier. |
| 4. | It has the unique ability to destroy helper T cells. |
The most common opportunistic infection associated with AIDS is :
| 1. | Tuberculosis |
| 2. | Pneumocystis carinii pneumonia |
| 3. | Cryptococcal meningitis |
| 4. | Toxoplasma encephalitis |