The root cause of pandemics – the destruction of nature – is being ignored, scientists have warned. The focus of world leaders on responding to future outbreaks overlooks the far cheaper and more effective strategy of stopping the spillover of disease from animals to humans in the first place, they have said.
The razing of forests and hunting of wildlife is increasingly bringing animals and the microbes they harbour into contact with people and livestock. About 70% of new infectious diseases have come from animals, including Covid-19, Sars, bird flu, Ebola and HIV.
However, preventing this root cause of spillover is scarcely mentioned by leaders and authorities, said the scientists behind a new independent taskforce, which will report to the coalition on Preventing Pandemics at the Source. The PPS said the issue has been ignored by the World Health Assembly, and a recent report for the World Health Organization on the coronavirus pandemic.
Recent research estimated the annual cost of preventing further pandemics over the next decade to be $26bn (GBP18bn), just 2% of the financial damage caused by Covid-19. The measures would include protecting forests, shutting down risky trade in wildlife, better protecting farm animals from infection and rapid disease detection in wildlife markets.
The new taskforce comprises experts from every region of the world and is hosted by Harvard University in the US. By the end of the summer, it will produce an action plan on preventing spillovers, which will then be championed by a group of high-level figures.
“Covid-19 was a warning shot from the whole of nature to our species,” said Aaron Bernstein, a doctor at Harvard’s Center for Climate, Health and the Global Environment who is leading the taskforce. “But so far world leaders are far from acting. You hear from [them] about the actions to supposedly prevent pandemics, but the idea of preventing their root causes is scarcely even mentioned, let alone discussed.
“The current narrative is heavily weighted towards health system preparedness, containment, and vaccinations,” he said. “This presumes the best we can do is prevent a disease from spreading once it emerges. [But] we’ve learned that our salvation comes cheap. The costs of actions [to prevent spillovers] are a fraction of the cost of managing a pandemic once it emerges.”
Many of these actions also tackle the climate and biodiversity crises, Bernstein said.
The World Health Assembly is the decision-making body of the WHO, attended by all member states. But, having reviewed the assembly agenda, the PPS said: “Our coalition is deeply concerned that it does not address the actual cause of all pandemics over the last century and thereby fails to address the need for true prevention.”
An independent report for the WHO on the Covid-19 pandemic, published on 12 May, concluded it was a preventable disaster that need not have cost millions of lives if the world had reacted more quickly. But the PPS said: “The mandate and scope of the independent panel’s work ignored the deeper source of all pandemics – spillover of viruses from animals.”
A “one health” high-level expert panel was launched in May to advise the WHO, the UN food and agriculture organisation (FAO), the World Organisation for Animal Health (OIE) and the UN environment programme (UNEP) on the development of a long-term global plan to avert outbreaks of diseases. The one health concept aims to improve health by recognising the connections between people, animals, plants and their shared environment.
“This is absolutely a step in the right direction,” said Bernstein. “But we need to focus on what science tells us, not what our existing organisations are equipped to do. The reason we have the challenge we do is because there is no WHO equivalent for planetary health.”