1. It is highly infectious in the phase following the appearance of rash
2. Infection usually confers lifelong immunity
3. It has a low secondary attack rate
Select the correct answer using the code given below :
Measles Statements Analysis
This section analyzes the provided statements about measles to determine their accuracy.
1. Measles Infectivity Phase
Statement 1 claims measles is highly infectious following the appearance of the rash. Measles is known to be highly contagious, particularly from a few days before the rash appears until about four days after the rash onset. Therefore, this statement is considered true.
2. Immunity Following Measles Infection
Statement 2 suggests that infection usually provides lifelong immunity. Natural infection with the measles virus typically results in robust and long-lasting immunity, often lasting a lifetime for most individuals. This statement is true.
3. Measles Secondary Attack Rate
Statement 3 states that measles has a low secondary attack rate. In reality, measles is exceptionally contagious. The secondary attack rate in susceptible individuals exposed to the virus is very high, often exceeding 90% in close contacts. Thus, this statement is false.
Conclusion on Measles Facts
Based on the analysis:
- Statement 1 is true.
- Statement 2 is true.
- Statement 3 is false.
Therefore, the correct option includes statements 1 and 2.
Important Questions from Infectious Disease Control & Prevention
As per the Open Vial Policy, partially used multidose vials of which of the following vaccines can be used over more than one immunization session?
1. BCG vaccine
2. DPT vaccine
3. Hepatitis B vaccine
4. Measles vaccine
Select the correct answer using the code given below.
Consider the following statements regarding dengue virus :
1. It has four distinct serotypes.
2. Infection with any one serotype confers lifelong immunity for that virus serotype.
3. Secondary infection with dengue serotype 2 leads to severe form of dengue.
Which of the statements given above are correct?
Consider the following statements regarding dengue :
1. The mosquito becomes infective after an extrinsic incubation period of 8-10 days.
2. Once it becomes infective, the mosquito remains infective for life.
3. The genital tract of the mosquito does not get infected.
Which of the statements given above are correct?
Consider the following statements about Kyasanur Forest Disease (KFD) :
1. It is transmitted by ticks.
2. It was originally called 'pig disease' because of the association with dead pigs.
3. It was first recognized in Karnataka State.
How many of the statements given above are correct?
- In countries with low levels of measles transmission, what should be the appropriate age for starting immuni-zation with measles-containing vaccine (MCV)?
