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
https://amp.theguardian.com/world/202...

Can You Catch it Twice?, New York Times
https://www.nytimes.com/2020/07/22/he...

Ed Yong, The Atlantic:
https://www.theatlantic.com/health/ar...

Chinese / Japanese Reinfection, New York Times
https://www.nytimes.com/2020/02/29/he...

Antibody Tests test wrong Antibodies, New York Times
https://www.nytimes.com/2020/07/26/he...

Florian Krammer, B Cells
https://twitter.com/florian_krammer/s...

Cross Reactive T-Cells, BBC Future
https://www.bbc.com/future/article/20...

Prof Shane Crotty
https://twitter.com/profshanecrotty/s...

Beware Sputnik, The Times
https://www.thetimes.co.uk/article/ru...