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How Decline of Indian Vultures Led To 500,000 Human Deaths (bbc.com) 49

An anonymous reader shares a report: Once upon a time, the vulture was an abundant and ubiquitous bird in India. The scavenging birds hovered over sprawling landfills, looking for cattle carcasses. Sometimes they would alarm pilots by getting sucked into jet engines during airport take-offs. But more than two decades ago, India's vultures began dying because of a drug used to treat sick cows. By the mid-1990s, the 50 million-strong vulture population had plummeted to near zero because of diclofenac, a cheap non-steroidal painkiller for cattle that is fatal to vultures. Birds that fed on carcasses of livestock treated with the drug suffered from kidney failure and died.

Since the 2006 ban on veterinary use of diclofenac, the decline has slowed in some areas, but at least three species have suffered long-term losses of 91-98%, according to the latest State of India's Birds report. And that's not all, according to a new peer-reviewed study. The unintentional decimation of these heavy, scavenging birds allowed deadly bacteria and infections to proliferate, leading to the deaths of about half a million people over five years, says the study [PDF] published in the American Economic Association journal.

"Vultures are considered nature's sanitation service because of the important role they play in removing dead animals that contain bacteria and pathogens from our environment - without them, disease can spread," says the study's co-author, Eyal Frank, an assistant professor at University of Chicago's Harris School of Public Policy. "Understanding the role vultures play in human health underscores the importance of protecting wildlife, and not just the cute and cuddly. They all have a job to do in our ecosystems that impacts our lives."

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How Decline of Indian Vultures Led To 500,000 Human Deaths

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  • by cayenne8 ( 626475 ) on Tuesday July 30, 2024 @11:25AM (#64666818) Homepage Journal

    The unintentional decimation of these heavy, scavenging birds allowed deadly bacteria and infections to proliferate, leading to the deaths of about half a million people over five years

    Nature...uh....finds a way....

    • The unintentional decimation of these heavy, scavenging birds allowed deadly bacteria and infections to proliferate, leading to the deaths of about half a million people over five years

      Nature...uh....finds a way....

      Condors! Condors are on the verge of extinction. If I was to create a flock of condors on this island, you wouldn't have anything to say!

    • Rabies... (Score:5, Informative)

      by Ungrounded Lightning ( 62228 ) on Tuesday July 30, 2024 @12:33PM (#64666988) Journal

      The unintentional decimation of these heavy, scavenging birds allowed deadly bacteria and infections to proliferate, leading to the deaths of about half a million people over five years

      Nature...uh....finds a way....

      A particularly deadly effect was the resulting rabies epidemic. The decline in vultures (the typical "first responders" to unattended wild animal corpses and predator leftovers) led to a population surge in other scavengers such as jackals and wild dogs. Unlike the vultures, mammals are rabies vectors, and both their increased population and their ability to be infected by contact with a rabies-infected corpse kicked the number of virus cases into a steep exponential growth.

    • Not Nature, Religion (Score:4, Informative)

      by Roger W Moore ( 538166 ) on Tuesday July 30, 2024 @01:52PM (#64667236) Journal
      If there was no religious prohibition on killing cattle and eating beef then there would be no problem with cattle carcasses lying around, rotting and spreading disease in the first place because cattle would be slaughtered and eaten before they died of natural causes.
      • https://www.bbc.com/news/world... [bbc.com]

        Everybody in the West knows that people in India won't kill cattle and eat beef because of religious reasons.

        What if this religious prohibition is not applied by non-Hindus or even required of every Hindu person?

      • There are wild cattle nearly everywhere including here in Florida. There is obviously a larger population in India due to cultural/religious reasons. However, if there weren't wild cattle, other wildlife would be more abundant and you'd have the same problem only a different species. Vultures eat dead carcasses before they can become health hazards. India happens to have a large wild cow population but the problem would be the same with wild buffalo or anything else.
        • However, if there weren't wild cattle, other wildlife would be more abundant and you'd have the same problem only a different species.

          No, you wouldn't.

          India happens to have a large wild cow population but the problem would be the same with wild buffalo or anything else.

          No, it wouldn't.

          There are lots of people starving in India, what makes you think they wouldn't eat those other animals?

          • There are lots of people starving in India, what makes you think they wouldn't eat those other animals?

            There are people starving just about everywhere in the world. There are also wildlife and ecosystems everywhere in the world. Even in major cities, you have people starving and an abundance of pigeons. By your logic, every homeless person would just start harvesting pigeons and there wouldn't be a problem.

            Wildlife will always exist. Wildlife will die of natural causes sometimes. Decomposing wildlife is a health hazard to humans. That's why you need carrion eaters in the ecosystem for human health.

      • by Darinbob ( 1142669 ) on Tuesday July 30, 2024 @04:57PM (#64667884)

        Ironically, the decline of vulture populations was noticed first by Parsi community, zoroastrians, whos burial rites involved leaving bodies on mountain tops for vultures. Relative would be surprised to find that their loved ones were rotting instead of being eaten since vultures were rare. But it took time to find out why the vultures were dying. Meanwhile the pills for cattle were routinely prescribed as the miracle cure, without knowing the side effects.

        But to your point, you're a bit off base. Most of the cattle are owned, not wandering wild, and used for milk or meat or farm labor. Milk is used all over, and there are plenty of non-Hindus in India that will eat meat (though recently there are riots of this in some states).

        • Most of the cattle are owned, not wandering wild, and used for milk or meat or farm labor.

          I never said the cattle were wild nor that they did not work or provide milk, that was your assumption but regardless it is not germaine to the discussion. The problem is specifically about rotting carcasses lying around and spreading disease so what metters is what happens after the animal is dead.. In most countries a beef carcass is a valuable source of meat and would be butchered. Clearly that is not happening in these regions of India since they are left to rot so how do you explain that difference co

  • by redmid17 ( 1217076 ) on Tuesday July 30, 2024 @11:25AM (#64666822)
    Lord knows we have more than enough turkey buzzards anywhere you can shake a stick in the US. Let's do an even swap, prioritized generic medications for American patients and we'll give you exclusive access to 1000 breeding pairs of turkey buzzards.
    • What do you have against turkey vultures?

      Yeah, up close they are ugly as all get-out-of-here, but I think they are kind of cool.

  • Here's a more accurate one
    How Decline of Indian Vultures may have contributed to roughly 500,000 Human Deaths according to some model of unknown accuracy

    • Re: (Score:2, Interesting)

      Yeah...like insurance companies haven't used models like these for decades and produced results that bear scrutiny.

      Are you a troll, or did you truly not know about actuarial tables and how they're used?

      • Hi, Just for the sake of completeness, I would like to point out that the two alternatives presented are not mutually exclusive, it is highly likely that the OP has no idea about either of your two main proposals (Troll, or ignorant of actuarial tables).
      • by Anonymous Coward

        They looked at before-and-after death rate reports along with vaccination purchases for certain areas and concluded that's the cause. Is this the same as actuarial tables?

    • by hey! ( 33014 )

      The idea that removing rotting carrion reduces human and animal exposure to microbial pathogens is hardly a novel, speculative idea.

  • Reminds me of China (Score:4, Informative)

    by smooth wombat ( 796938 ) on Tuesday July 30, 2024 @12:13PM (#64666926) Journal
    Although what China did to sparrows was intentional [thevintagenews.com], it shouldn't surprise anyone that the unintentional killing of vultures has a similar, though far smaller, effect. When you remove a creature so associated with cleaning up refuse from the environment, what do you think would happen?
  • show me the source (Score:3, Insightful)

    by wesolve4 ( 10005286 ) on Tuesday July 30, 2024 @02:36PM (#64667394)
    prove to me that 500,000 figure wasn't pulled right out of someone's ass.
  • How about they try cleaning up after themselves?

  • by Anubis IV ( 1279820 ) on Tuesday July 30, 2024 @05:31PM (#64667998)

    The 99% Invisible podcast recently covered this issue with their Towers of Silence [99percentinvisible.org] episode that specifically focused on an unexpected impact on the religious rites of a minority group in India. I'll admit that that sort of topic is normally out of my area of interest, but it was a fascinating episode about details you normally wouldn't consider when we talk about ecologic collapse (e.g. social norms, how dissimilar scavengers can be, how religion adapts to the modern world using technology, etc.). Highly recommended.

    One tidbit I'll mention, however, is the symmetry present in the situation, in that a lot of the reason why the problem is ongoing is due to the religious beliefs of another group. It's fairly common knowledge that practicing Hindus are unwilling to kill a cow, so the best they can do for a sick or dying cow is to make the cow more comfortable. Therein lies the rub: Hindu farmers have continued using diclofenac—whether illegally due to its cheap cost and ease of availability from across the border or accidentally due to shady sellers labeling it as a different painkiller to cut costs—despite the ban on diclofenac. While the ban helped, numbers have continued dropping. The situation has no end in sight and is dire enough that conservationists now have sanctuaries dedicated to keeping the vultures alive so that they can reintroduce them once all of this is under control.

  • diclofenac, a cheap non-steroidal painkiller for cattle

    ... giving pain killers to stray cows? I can understand them treating those owned as livestock (for milk) or draft animals. But then when they die, dispose of the carcasses properly. The ones just wandering the villages or forests; just leave them be. Don't medicate them and when they die, vulture food.

  • Yeah, they estimated the number of deaths. I estimate the number of deaths directly attributable to 7, namely the times a vulture fell from the sky onto a windshield and the guy crashed.

I have a very small mind and must live with it. -- E. Dijkstra

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