The window period for HIV infection is the time between potential exposure to the virus and when an infection can be accurately detected by an HIV test. During this period, a person may be infected but tests might still be negative.
Different tests have different window periods, but generally:
Therefore, the most appropriate window period for HIV infection detection using common tests is 6 to 24 weeks.
Match List I with List II and select the correct answer using the codes given below the lists:
| List I (Disease) | List II (Example) |
| A. Nosocomial | 1. Cytomegaloviral infection |
| B. Opportunistic | 2. Hepatitis B viral infection |
| C. Iatrogenic | 3. Aplastic anemia |
| D. Epornithic | 4. Influenza |