5 July 2020
LET’S CUT to the chase, courtesy of Nature magazine.
As it points out, there’s strong evidence that the Covid-19 virus originated in bats. But how, it asks, did it get from bats to people? Researchers overwhelmingly think that it’s a wild virus, which probably passed to people through an intermediate species. But no-one has found the virus in the wild yet.
So, scientists being scientists, around the world they’ve been in a flat spin running computational models, cell-studies and animal experiments to try to pinpoint the absolutely specific viral host that kicked off the pandemic.
Unsurprisingly, tracking down the precise intermediate species involved is very tricky. As Lucy van Dorp, a geneticist from University College London (UCL), tells Nature: “It is quite possible we won’t find it. In fact, it would be exceptionally lucky if we land on something.”
But in the midst of this investigative maelstrom, something stirs. It’s called, to be blunt, the bleedin’ obvious, a concept which, to the scientific mind, is usually inadmissible.
But Michelle Baker, a comparative immunologist at the Commonwealth Scientific and Industrial Research Organisation in Geelong, Australia, doesn’t mind stepping out of line.
Throwing off the scientific straitjacket, she sets the scene. It’s useful, she says, to know which animals are susceptible, to manage the risk that they might become virus reservoirs and possible sources of infection in people.
Michelle then delivers the killer line: “But when trying to narrow down the culprit, it seems sensible to focus on those animals in close contact with bats.” Eureka!
The ‘it’s staring you in the face’ moment is taken up by Peter Daszak, president of the non-profit EcoHealth Alliance in New York City, who has visited many villages, wildlife-markets, bat-caves and farms in southern China over the last 15 years.
He says: “Animals at wildlife-farms in China are one of the first places to look. These farms stock many captive-bred animals, from civets to raccoon dogs and coypu – a large rodent – often living close to livestock such as pigs, chickens and ducks.”
“These farms are usually wide open to bats, which feed at night above the pens, and some of which roost in the buildings. They are also usually linked to people’s houses so that whole families are potentially exposed.
“The opportunities for these viruses to spill over across a very active wildlife–livestock–human interface is clear and obvious.”
The way ahead is equally obvious: shut down, permanently, the wildlife-farms, thus eradicating a clear transmission route for viruses such as Covid-19, which has so far killed more than 500,000 people around the world and laid waste lives and economies on a vast and unprecedented scale.
Wildlife-farms: an abhorrent and brutal trade with lethal repercussions for creatures both beautiful and often rare, and for human health
Wildlife-farms have been operating in China on a vast scale. Nearly 20,000 of them have been raising species including peacocks, civet cats, porcupines, pangolins, ostriches, wild geese and boar, bamboo rats, snakes, toads and squirrels and, until about early February, the practice was still being promoted by Chinese government agencies as an easy way for people in rural China to get rich.
There may now be room for a chink of optimism. With general agreement that Covid-19 – as at 5 July the virus had killed 530,668 people worldwide and infected 11,241,655 – originated in wildlife including live wolf-pups, golden cicadas, scorpions and civets sold at the Huanan seafood wholesale market in Wuhan in early December, China issued a temporary ban (note temporary) on the wildlife trade to curb the spread of the virus at the end of January, and began a widespread shutting of breeding facilities in early February.
In two provinces only, China is now offering wildlife-farmers a government buy-out. This would give people in Hunan and Jiangxi provinces, neighbouring regions in the southeast of the country, the opportunity to be compensated for switching to growing fruit, vegetables, tea-plants, or herbs for traditional Chinese medicine. Very much less welcome is the option to breed other animals, such as pigs and chickens.
However, according to Humane Society International, the buy-out plan does not tackle the huge numbers of wild animals bred for fur, traditional Chinese medicine and the pet trade, the most valuable portion of the wildlife trade and worth an estimated $55bn.
There is also concern about what will happen to the wild species if farmers go for the buy-outs. The proposal has three options – release of animals into the wild in suitable and non-residential habitats; utilisation by other industries such as zoos, laboratory research, and traditional medicine; or mass culling. Only the first of these is acceptable, and it would need to be diligently overseen.
The impression is that a start may have been made to heading off the danger of a Covid-20, 21, 22 and onward coronavirus by means of a jump from an animal to a human. But enormous international vigilance and pressure remain essential, and at the moment there is precious little evidence of such. In the UK, for example, the BBC has evidently completely abdicated its responsibility in this direction.
Reduced to its essence, the message remains: all the death and turmoil caused by Covid-19 is attributable to a small minority of people displacing, disturbing, killing and eating certain wild animals, and animals which came into contact with the wild creatures.
If ‘we’ hadn’t intruded on their territories, wrecking their habitats, if ‘we’ hadn’t captured and caged and sold for meat the wild animals in question, none of this would have happened.
But instead of ramming this fact into the public’s skulls – an imperative activity if theoretically endless new coronaviruses are to be avoided – too much of the UK print and broadcast media focuses almost entirely on sideshows: how many drinkers went on the razz in Soho on 4 July?; Leicester in a second lockdown; when should schools reopen?; should Dominic Cummings have gone on a day trip from Durham to the east coast?
I’ve been a hack for 58 years. I find it sad therefore to say so many of my colleagues are doing us all a disservice.