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Quick Summary
Vaccines effectivity are not permanent. Recall that a vaccine is simply something that induces your body to make anti-bodies. Eventually there isn’t enough vaccine material making a booster necessary.
Details
- Initial COVID-19 vaccines used mRNA (spike protein production) to induce an antibody response.
- Boosters may include other payloads including mRNA designed for viral variants.
- However, the basic vaccine technology is still limited because:
- Boosters will always be needed because of the millions of variations of viruses. They mutate over time.
- They don’t last forever.
- Also, current vaccines do not create a comprehensive immune system response. Natural immunity includes many other layers of defenses which vaccines do not provide. For example, an individual having been infected with SARS-CoV-2 will end up having natural immunity which included T-Cell immunity, which provides lifelong immunity. No vaccine does that.