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Rapid response to:

Research Special Paper

Effect of school closures on mortality from coronavirus disease 2019: old and new predictions

BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m3588 (Published 07 October 2020) Cite this as: BMJ 2020;371:m3588

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Predicting the pandemic

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Covid-19: Modelling the pandemic

Rapid Response:

The paper does not acknowledge the limitations of the Imperial model - with dangerous policy implications

Dear Editor

The Imperial model's many limitations - e.g. as noted in Shen, Taleb, Bar-Yam in March 2020 (link below) are not referenced in this paper - a serious omission.

This paper seems to reinforce the dangerous polarisation of the present public debate between 'lockdown' vs 'herd immunity'. The debate ignores the strategy which has had proven success in S Korea, Taiwan, New Zealand, etc - namely, 'find, test, trace, isolate, support ' - without lockdown. The model is not able to simulate this kind of contact finding and isolating.

As Chen et al note 'Focusing on details but using incorrect assumptions, makes for bad policy advice. Where lives are at stake, it is essential for science to adhere to higher standards'

Chen Shen, Taleb, Bar-Yam
https://www.academia.edu/42242357/Review_of_Ferguson_et_al_Impact_of_non...

(Covid science discussion group
https://drive.google.com/file/d/1gaVwqDAHwhMzvq6GW45hahc6Ky7gIj8F/view?u...)

Competing interests: No competing interests

08 October 2020
T Andrew Broadbent
Research Director
CES Ltd Economic & Social Research & Covid Science Discussion Group (link below)
CES Ltd Economic & Social Research, The Mall, London N14