With the press reporting 23 fold reductions in antibody levels to the novel coronavirus after just 3 months, and stage 3 vaccine approval still many months away - the question of how long immunity lasts couldn’t be more pressing.

How does the immune system work? What’s different about SARS-CoV-2?

And how long before those of us who’ve had it already start catching it again? We’ve got a best guess - let’s see if we’re right.

0:00 Introduction
0:22 Declining Antibodies
1:30 The Immune System
2:14 The Three Phases
5:25 B Cells
8:30 Conclusion


REFERENCES:

Declining Antibodies, The Guardian
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Can You Catch it Twice?, New York Times
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Ed Yong, The Atlantic:
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Chinese / Japanese Reinfection, New York Times
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Antibody Tests test wrong Antibodies, New York Times
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Florian Krammer, B Cells
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Cross Reactive T-Cells, BBC Future
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Prof Shane Crotty
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Beware Sputnik, The Times
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