Science & Technology Practice Question›› Medical Science ››
Vaccines
››
Live attenuated vaccines
M
Question 1
⏱ 0
Which of the following vaccines are examples of live attenuated vaccines?
1. Measles, Mumps, and Rubella (MMR) vaccine
2. Bacillus Calmette-Guérin (BCG) vaccine
3. Hepatitis B vaccine
4. Inactivated Polio Vaccine (IPV)
Select the correct answer using the codes below:
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 and 4 only
(d) 1, 2 and 4 only
Explanation
Live attenuated vaccines are vaccines that contain a version of the living virus or bacteria that has been weakened (attenuated) so it cannot cause disease in healthy individuals but still stimulates the immune system to produce an immune response.
Measles, Mumps, and Rubella (MMR) vaccine: The MMR vaccine is a live attenuated vaccine. It contains weakened forms of the viruses that cause measles, mumps, and rubella.
Bacillus Calmette-Guérin (BCG) vaccine: The BCG vaccine is a live attenuated vaccine used primarily against tuberculosis (TB). It contains a weakened strain of the bacterium Mycobacterium bovis.
Hepatitis B vaccine: The Hepatitis B vaccine is not a live attenuated vaccine. It is a recombinant vaccine, which means it contains a protein from the virus (surface antigen) produced in the lab, rather than the live virus itself.
Inactivated Polio Vaccine (IPV): The Inactivated Polio Vaccine (IPV) is not a live attenuated vaccine. It contains inactivated (killed) poliovirus and does not contain live virus.
The live attenuated vaccines in the list are the MMR vaccine and BCG vaccine.
Kutos:Science & Technology Expert
Hello! I am a Science & Technology expert. You can ask any question or request a detailed analysis related to this topic.
