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The Rules of Contagion Reviews

The Rules of Contagion by Adam Kucharski

The Rules of Contagion

Why Things Spread - and Why They Stop

Adam Kucharski

4.00 out of 5

6 reviews

Category: Non-fiction
Imprint: Wellcome Collection
Publisher: Profile Books Ltd
Publication date: 13 Feb 2020
ISBN: 9781788160193

Here, epidemiologist Adam Kucharski reveals how new mathematical approaches are transforming what we know about contagion - from the revolutionary initiatives that helped tackle gun violence in Chicago to the truth behind the spread of fake news. And along the way, he'll explain how innovations and emotions can spread through our friendship networks, what STDs can tell us about banking, and why some outbreak predictions go badly wrong.

3 stars out of 5
25 Mar 2020

"the book you might want to reach for"

Modellers have a saying: “If you’ve seen one pandemic, you’ve seen … one pandemic.” Covid-19 doesn’t behave like flu, which doesn’t behave like Ebola. The title of The Rules of Contagion refers to the things that are common to all pandemics – from the ice bucket challenge to bitcoin to infectious diseases – rather than those that are peculiar to each one. Modellers have spent the last century teasing out those rules, and now their conclusions are being put to the mother of all tests. This book explains how they arrived at them, and why they indicate that what each of us does next will make a difference. There may still be a lot of uncertainty around Covid-19, but one thing is clear: for Kucharski and his fellow modellers, it will be one more learning experience.


4 stars out of 5
Roger Alton
19 Mar 2020

"Were there a Booker Prize for timeliness, this nuggety gem of a book would be a shoo-in"

Whether it is disease epidemics or crime and terrorism, mathematical models can help countries plot outcomes and allocate resources. But models are just that, writes Kucharski: reality is messy and complex. If you build a model train set — no matter how skilful and full of add-ons such as delays, leaves on the line, faulty signals — it will always differ from reality in some way. There was some post-9/11 research into threats from bioterrorist attacks, which put possible fatalities at 77 trillion. Not bad for a world population of seven billion. The word coronavirus doesn’t crop up in this brilliant, dense, scholarly book. But Kucharski has pulled off the extraordinary trick of shining the brightest light, for this reader anyway, on this unseen, menacing, but ultimately beatable, enemy.

4 stars out of 5
Anjana Ahuja
10 Mar 2020

"a timely analysis by Adam Kucharski"

Kucharski, though, has made an extremely respectable stab at something broader, producing a work of contemporary relevance that Malcolm Gladwell devotees would enjoy: a blend of biology, mathematics, history, behavioural science and anecdote that reveals how diseases, ideas and behaviours are transmitted. His nicely observed analysis deserves to catch on. 

4 stars out of 5
Steve Bleach
16 Feb 2020

"Kucharski is capable of looking beyond the numbers, to the culture and politics of outbreaks"

This is a hell of a moment for a book like this to come out, and some might assume it’s a lightning-fast cash-in on a global tragedy. They would be wrong. Coronavirus hadn’t even appeared when Kucharski delivered the manuscript, so the disease isn’t directly addressed here. But the principles of contagion, which, he argues, can be applied to everything from folk stories and financial crises to itching and loneliness, are suddenly of pressing interest to all of us. Kucharski, a mathematician who has worked on the fight against the ebola and zika viruses, believes that to master the diseases we first have to master the arithmetic.

4 stars out of 5
14 Feb 2020

"Even had it not been so “lucky” with its timing, it would be a worthwhile book; much of the modern world will make more sense having read it"

I imagine that, in the publisher’s offices, they are having guilty celebrations that the book is coming out in the middle of the coronavirus outbreak: it is hard to imagine a more timely publication. And it is a useful, eye-opening read on that front, although it was written before the coronavirus was heard of. Unchecked, a disease with an R greater than one will form an S-shaped curve on a chart: the number of new infections shooting up, until it starts to run out of susceptible people. That still seems to be happening in China. It will also help you to understand the idea of “super-spreaders” and their role in keeping even quite low-R infections moving. One unlucky Briton apparently spread coronavirus to 11 people and has been termed a super-spreader.

5 stars out of 5
12 Feb 2020

"his book prepares the ground comprehensively for readers to make sense of what is happening today"

The mathematics of contagion varies little from coronavirus to computer virus, financial risk to fake news. Now, with perfect timing, a good guide has arrived to pull together scientific knowledge about the way things spread and how to block (or encourage) their transmission. Adam Kucharski, an epidemiologist at the London School of Hygiene and Tropical Medicine, completed The Rules of Contagion before the novel coronavirus disease Covid-19 emerged in Wuhan — and he sensibly resisted rushing into a last-minute update or revision to take account of the new epidemic, which is developing so fast that anything he wrote about it would have been out of date before publication.