Question
What is the window period for HIV infection?
The correct answer is
6 – 24 weeks
Understanding the HIV Window Period
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.
HIV Detection Timeframe
Different tests have different window periods, but generally:
- Initial symptoms might appear within 2 to 4 weeks after exposure.
- Most infections become detectable by standard antibody tests within 6 to 24 weeks after exposure.
- This 6 to 24 weeks range represents the most common and broadest window period for standard diagnostic tests to confirm infection.
Analyzing the Options
- Option 1 (3 – 15 days): Too short for most standard tests.
- Option 2 (6 – 24 weeks): Accurately represents the typical window period for reliable detection.
- Option 3 (6 – 8 months): Longer than the standard window period for most initial tests.
- Option 4 (None of these): Incorrect as Option 2 is suitable.
Therefore, the most appropriate window period for HIV infection detection using common tests is 6 to 24 weeks.
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Important Questions from Disease
- The sequence of events leading to disability and handicap is:
- Which of the following are the characteristic features of screening tests?
1. Done on healthy people
2. Done on unhealthy people
3. More accurate
4. Less accurate
5. Less expensive
6. More expensive
7. Not a basis for treatment
8. Used as a base for treatment
Select the correct answer using the code given below: Match List-I with List-II and select the correct answer using the code given below the lists:
List-I (Major Group of Insecticides) List-II (Name of Insecticide) A. Stomach poison 1. Temephos B. Organo-chlorine compound 2. Propoxur C. Organo-phosphorous compound 3. Sodium fluoride D. Carbamates 4. Dieldrin - With reference to mumps, consider the following statements:
1. The average age of incidence of mumps is higher than that of measles and chicken pox.
2. The mumps disease tends to be more severe in adults than in children.
Which of the statements given above is/are correct? - Consider the following features of food poisoning:
'Incubation period less than 24 hours, source of infection is milk products, and symptoms include diarrhoea and vomiting.'
To which of the following does the above description apply?
1. Staphylococcal food poisoning
2. Salmonella food poisoning
3. Botulism
Select the correct answer using the code given below:
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