Want to Stop the Next Pandemic? Start Protecting Wildlife Habitats
"(Bloomberg) — There are four critical facets of pandemic prevention, according to Lee Hannah, senior scientist at Conservation International. Three of them make immediate sense against the backdrop of our current emergency: stockpile masks and respirators; have testing infrastructure ready; and ban the global wildlife trade, including the open animal markets where COVID-19 may have first infected people.
His fourth recommendation is more grandiose: “Take care of nature.”
The assault on ecosystems that allowed COVID-19 to jump from animals to humans went far beyond merchants hunting and selling rare wildlife. Biodiversity—that is, the health of the entire ecosystem—can restrain pathogens before they ever leave the wild. “We need to tell people right now that there is a series of things we need to do once we’re out of this mess to make sure it never happens again,” Hannah says."
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"It’s a numbers game, in part. Not all species in a community are equally susceptible to a given disease, nor are they all equally efficient transmitters. In diverse ecosystems well separated from human habitations, viruses ebb and flow without ever having a chance to make it to the big time.
But as people move in, those protections begin to break down. Disrupted ecosystems tend to lose their biggest predators first, and what they leave behind are smaller critters that live fast, reproduce in large numbers, and have immune systems more capable of carrying disease without succumbing to it. When there are only a few species left, they’re good at carrying disease, and they thrive near people, there may be nothing between a deadly pathogen and all of humanity."