MRNA vaccines

Definition

mRNA vaccines are a type of vaccine that uses messenger RNA to instruct cells to produce a protein that triggers an immune response. This immune response helps the body recognize and fight the pathogen if exposed in the future.

5 Must Know Facts For Your Next Test

1. mRNA vaccines do not use live virus, reducing the risk of infection from the vaccine itself.
2. They work by delivering synthetic mRNA into cells, which then produce a viral protein to stimulate immunity.
3. The Pfizer-BioNTech and Moderna COVID-19 vaccines are examples of mRNA vaccines.
4. mRNA vaccines can be developed more quickly than traditional vaccines, accelerating responses to emerging infectious diseases.
5. They require proper storage at low temperatures to maintain stability and effectiveness.

Review Questions

• How do mRNA vaccines differ from traditional vaccines in their mechanism of action?
• What are two examples of mRNA vaccines currently in use?
• Why is it crucial to store mRNA vaccines at low temperatures?

Related terms

Antigen: A substance that induces an immune response, particularly the production of antibodies.

Adaptive Immunity:

The part of the immune system that adapts its response to specific pathogens through targeted attacks.

Immunization: The process by which a person becomes protected against a disease through vaccination or natural infection.