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Journalism fell into a trap with the climate crisis. By balancing the arguments of scientists and deniers early on,the media gave the public a distorted view of the expert consensus.
We now live with the outcome of that coverage:less than half of Americans surveyed in 2016 believed the climate crisis was caused by human action,compared to 97 per cent of climate scientists.
I worry much of the media is doing the same with the lab leak hypothesis. I worry the very scientists in Wuhanwho tried to warn us,for years,about the threat posed by bat coronavirus pandemics are now being blamed.
We have explored the issue in thisin-depth feature andin this story,but I worry elsewhere the arguments are being presented as competing when one of them – the lab leak – is viewed as far less likely than the other by most experts.
It does not help that the lab leak is such a compelling theory.
Human brains intrinsically are designed to join dots between events,says Mathew Marques,who lectures in social psychology at La Trobe University. We struggle with uncertainty. And we like to blame people for things.
The natural origin theory of COVID-19 says that the pandemic was both random chance,but also our fault:the climate crisis,deforestation,animal trafficking,mega-cities,air travel and intensive agriculture have all been dramatically increasing our risks of a pandemic.
Fixing that will be hard and necessitates uncomfortable conversations about how we live now.
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Set against that,the lab leak theory is positively compelling. Scientists doing scary and dangerous experiments! A conspiracy among foreigners to cover up a lab accident! Something bad that happened to us that wasn’t our fault!
And China is the perfect foil:the nation we trust the least andincreasingly view as a security threat.
“We’re drawn to understanding,I think,chaotic events that leave us in turmoil. Pointing the finger at people,usually powerful or not part of the in-group – and at the moment China does seem to be a political target for some in the West,” says Dr Marques.
Allowing this theory to run and gain mainstream prominence may have serious real-world consequences because it distracts from a focus on reducing the human-caused risk factors that drive pandemics.
“The discourse detracts from the fact that epidemiologists and veterinary pathologists and other scientists in this area have been warning governments and the community for years that a zoonotic spillover with pandemic potential was increasingly likely to occur,” says Dr Katie Woolaston,a Queensland University of Technology international wildlife law researcher.
“It takes focus away from the fact that the drivers of zoonotic spillover are human-induced environmental changes,and that needs to be addressed. I am concerned that an increased belief that the virus originated in a lab further detracts from the real and urgent need to enact preventative laws and policies.”
The case for a natural origin
There has been plenty of ink spent in the last month on laying out the case for the lab leak hypothesis.
I thought it might be valuable to spell out the other theory. Why do most experts believe COVID-19 has a natural origin?
As I noted earlier,we don’t have definitive,100 per cent proof. So it is helpful to think of this argument in probabilities. What is more likely?
Consider first ashortlist of diseases that have come from animals:the coronaviruses MERS and SARS,the plague,rabies,West Nile virus,HIV,Ebola,Influenza,Nipah,Zika and Yellow Fever.
The best example we can point to of a lab leak pandemic:swirling speculation about a 1977 Russian influenza outbreak,points out University of NSW coronavirus researcher Professor Peter White.
“The most likely explanation,in my opinion,is it was a zoonotic transmission and did not escape the lab,” he told me. But,he added,he did not believe there was a consensus among his colleagues on which explanation was more likely.
Consider the maths:there are something like 1.67 million viruses circulating among complex life,but just 219 affect humans.
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If we expose ourselves to animals,it becomes a simple maths problem for viruses to solve:there are so many of them,mutating so often,that it is inevitable one will pick up the right combination of genetic changes to thrive in humans. Indeed,COVID-19can infect a wide range of other animals;the virus itselfis nearly identical to a virus isolated in bats. Samples of the virus were found at the Wuhan wet market,at or below floor level.
And we are exposing ourselves to animals more and more. Some 60 per cent of new diseases to emerge in humans between 1940 and 2004 came from animals,with that proportion increasing over time. And new viruses jump into humansall the timewithout us knowing.Surveys find antibodies to strange bat coronaviruses in the blood of people living near bats.
That’s why scientists had long warned about pandemics jumping from animals to humans,and why they were not surprised when COVID-19 arrived (coronaviruses,for reasons we don’t yet understand,seem particularly prone to jump).
“We have been monitoring these coronaviruses. They’ve been jumping species boundaries,” Professor Edward Holmes from the University of Sydney told me last year.
“We knew this was going to happen.”
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