Describe different strategies of developing COVID vaccines?
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Developing COVID-19 vaccines involved several strategies. **mRNA vaccines**, like Pfizer-BioNTech and Moderna, use messenger RNA to instruct cells to produce the spike protein found on the virus's surface, prompting an immune response. **Viral vector vaccines**, such as AstraZeneca and Johnson &Read more
Developing COVID-19 vaccines involved several strategies. **mRNA vaccines**, like Pfizer-BioNTech and Moderna, use messenger RNA to instruct cells to produce the spike protein found on the virus’s surface, prompting an immune response. **Viral vector vaccines**, such as AstraZeneca and Johnson & Johnson, use a harmless virus to deliver genetic material that encodes the spike protein, stimulating immunity.
**Protein subunit vaccines**, like Novavax, include harmless pieces of the virus (often the spike protein) to elicit an immune response without using the live virus. **Inactivated or killed virus vaccines**, such as Sinopharm and Sinovac, use virus particles that have been killed, so they cannot cause disease but still provoke an immune response.
**Live attenuated vaccines** use a weakened form of the virus, which can replicate without causing serious illness, generating a strong immune response. These strategies vary in terms of technology, manufacturing processes, and storage requirements. Each approach aims to teach the immune system to recognize and combat the virus, ensuring diverse and widespread protection against COVID-19.
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