Q. Consider the following statements regarding mRNA vaccines:
1. They use live viruses to trigger an immune response in the body.
2. mRNA Vaccines are stable at high temperatures, making packaging and distribution easy.
Which of the above statements is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: D
Notes:

Both statements are incorrect. 

  • Statement 1 is incorrect: Traditional vaccines perform this task by introducing a dead, inactive or modified portion of a virus into our body so that our immune system can learn to recognize and fight this foreign invader. On the other hand, mRNA vaccines are a new type of vaccine. They don’t use live viruses to trigger an immune response. Instead, they supply mRNA that instructs our cells to make a version of the SARS-CoV-2 spike protein that will trigger an immune response. Once triggered, the body will make antibodies. These antibodies will help to fight the infection if the real virus enters the body in the future. 
  • Statement 2 is incorrect: mRNA Vaccines are not as stable at high temperatures, making packaging and distribution difficult. 

Source: Article