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Covid-19 antibody tests: a briefing

BMJ 2020; 369 doi: https://doi.org/10.1136/bmj.m2284 (Published 24 June 2020) Cite this as: BMJ 2020;369:m2284

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Rapid Response:

Re: Covid-19 antibody tests: a briefing

Dear Editor

Thank heavens for an unambiguous criticism of these tests by Dr Pushpa-Rajah (rapid response).
I challenge anyone medically qualified to disagree.

Starting from here, I go on to say:

1. Nobody knows how many persons in any discrete population have had Covid - 19 infection eliciting antibody reaction in the host.

2. Nobody knows how many individuals in such population inhaled Covid -19, or were infected mucosally by Covid-19, and were too strong ( ? Cellular immunity) to develop an antibody reaction, with or without clinical disease.

The implications for the value to be attributed to vaccines will be a matter for conjecture.

Competing interests: No competing interests

24 July 2020
JK Anand
Retired doctor
Free spirit
Peterborough, England