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With his ridiculous statements at the "launch" of the booster shots in the video below Fauci dooms the human species to paying for the Original Antigenic Sin.

Original antigenic sin, also known as antigenic imprinting or the Hoskins effect,[1] refers to the propensity of the body's immune system to preferentially utilize immunological memory based on a previous infection when a second slightly different version of that foreign pathogen (e.g. a virus or bacterium) is encountered.

This leaves the immune system "trapped" by the first response it has made to each antigen, and unable to mount potentially more effective responses during subsequent infections. Antibodies or T-cells induced during infections with the first variant of the pathogen are subject to a form of original antigenic sin, termed repertoire freeze.
Original antigenic sin - Wikipedia

References

Dr. Fauci Just Issued This Urgent Warning to Vaccinated People
The U.S. has been fighting the COVID pandemic for nearly two years now. While we all hoped that the virus would be eradicated by now, a full year since the introduction of highly effective vaccines, slowing vaccination rates and a fast-spreading variant kept the pandemic in full swing over the summe…
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