Thank You For Your Voice – Editors are Listening and Bats are Benefiting

By Merlin Tuttle
6/27/19

A reminder that our members DO make a difference! Leading news media outlets are changing tack, publishing more positive, and fewer negative, stories about bats as a direct result of MTBC members’ ongoing support and actions.

Your vigilance brings misleading articles to our attention. Your support enables us to carefully document and explain issues of concern. Your personal, diplomatic comments to editors influence their further actions. Media portrayal of bats cannot be ignored. It is key to broad public understanding and support, without which conservation progress could prove impossible.

The intermediate horseshoe bat (Rhinolophus affinis) ranges from northern India to southern China. It is one of the horseshoe bats speculated, but still unproven to have caused the SARS epidemic.

Since 2014, we’ve prepared and distributed 15 blog posts and 18 Bat Flashes providing counterpoint documentation in response to exaggerated, misleading, and often completely wrong speculation attempting to link bats to rare, but scary diseases. Widely distributed publications included “Give Bats a Break” in Issues in Science and Technology (subsequently translated into French and Chinese), “Fear of Bats and its Consequences” in the Journal of Bat Research and Conservation, and “Humans Shouldn’t Be So Scared of Bats” in Slate. Additionally, the science journal, Nature, published a co-authored response in its correspondence section, titled “Don’t misrepresent link between bats and SARS.” (more…)

Read More

Bat Flash! Scientific Credibility Under Siege—Sound Data Versus Premature Speculation

By Merlin Tuttle
2/21/19

Just as we enter a period of exceptional need for reliable science to protect and restore a healthy planet, too many traditionally prestigious science journals and institutions are rewarding bad science. (1) (2) “Scientists are supposed to relentlessly probe the fabric of reality with the most rigorous and skeptical of methods.” (3) Yet traditionally credible journals like Nature and Science are increasingly publishing sensational speculation, particularly studies attempting to link bats to deadly diseases. (4)

Growing numbers are attempting to prove rather than test hypotheses, sometimes based on a sample of just one viral fragment from a single bat. (5) Kai Kupferschmidt’s article titled, “This bat species may be the source of the Ebola epidemic that killed more than 11,000 people in West Africa,” exemplifies the problem. It is based on a highly questionable sample from one bat, though it appeared in the online news site of the journal Science (January 24, 2019).

The common bent-winged bat lives in caves and cave-like locations from southern Europe to Japan and Southeast Asia to China, the Philippines and Solomon Islands, most of Africa and eastern Australia. It is insectivorous, often feeding on small beetles, and forms large colonies, some exceeding 100,000 individuals.

As is typical in such stories, it begins with a scary question that will grab readership and media attention. That Science title is followed by a emboldened quote stating that “This is an important new lead and it should be followed up extensively.”

Later quotes, less emphasized, admit that only a small viral fragment was found, and that it may have come from an infected insect eaten by the bat. In other words, this bat may have simply eaten an Ebola-carrying insect, completely changing the bat’s role from implied source to controller. Perhaps if virologists weren’t so focused on proving that Ebola comes from bats, they might have found the true source by now.

A growing number of leading virologists are warning that virus hunting, promoted by such articles, is a costly waste. The unsupportable public health promises being made are likely to demean the credibility of science. (6) Scientists need incentives for finding the right answer rather than for simply getting published. (1)

Kupferschmidt’s article ends with a warning that bats shouldn’t be killed. However, as already documented, people seldom tolerate and often kill animals they fear, especially bats. (7) (8)

The New York Times ran a similar account of the same story, authored by Denise Grady. It was titled “Deadly Ebola Virus Is Found in Liberian Bat, Researchers Say.” The author admits “It feels premature scientifically” but fails to admit that the small viral fragment may have come from an infected insect eaten by the bat, making the bat a potential aid in limiting the spread of Ebola. They too, belatedly and ineffectively, admonish not to kill bats.

Sensational and premature reports like these are clearly irresponsible and risk great harm to both scientific credibility and the environment. (more…)

Read More

A Big Step for Bats

Merlin Tuttle
1/22/19

Today’s issue of TheScientist contains another outstanding example of how MTBC is making a unique, but critical difference for bats. This article [by Merlin Tuttle] was originally submitted as an email to the editor. On January 13, I explained the harm done by biased portrayal of bats. The editor promptly requested permission to publish my communication as an op-ed. We encourage our members to share it broadly. Nothing can threaten bats more than the fear and intolerance created by misleading disease stories.

Rousette fruit bats are essential pollinators and seed dispersers. They form colonies of many thousands in caves and abandoned mines where they are extremely vulnerable to extermination. Tens of thousands were killed at a single site in Uganda by humans overreacting to fear of Marburg virus.

Speculation linking bats to scary diseases has become lucrative, both in generating research grants and media readership. As historically documented, it can have devastating impact in fostering intolerance and even massive bat eradication. It also threatens the credibility of scientists and publishers and diverts critical public health funding from far higher priorities.

Many authors and publishers of such counterproductive speculation are well intended, just misinformed. If kindly approached with sound documentation of the harm being done, they are appreciative and can be extremely helpful as we have repeatedly demonstrated.

 

 

 

Read More

Bat Flash! Washington Post Exaggerates Disease Risk from Bats

Merlin Tuttle’s Response
1/8/19

Lena Sun’s article, “On a Bat’s Wing and a Prayer,” in the December 13, 2018 edition of The Washington Post, though well intended, contains misinformation that can threaten both conservation and public health. It leads with two false premises: bats are “some of the most dangerous animals in the world” and the rare Marburg virus is an important threat to world health. (1)

This basic discovery was covered by several news media, each with a slightly different slant. We responded to this one because it contained the worst misrepresentations. It was the only one seen that claimed bats to be “some of the most dangerous animals in the world” in addition to exaggerating the seriousness of its threat to world health.

Since its discovery in 1967, Marburg virus has caused a dozen outbreaks, killing fewer than 400 people. All the so-called “emerging diseases” speculated to be associated with bats worldwide, have killed fewer than 20,000 people in the past 40 years.

By comparison, HIV from chimpanzees has killed more than 39 million people, (2) yet these more popular animals consistently escape being labeled as dangerous.  Among other viral killers in Africa, the World Health Organization reports more than 70,000 children die annually from vaccine-preventable roto virus infections. (3) It also warns of geometric growth in obesity, that according to the National Institutes of Health causes 300,000 preventable deaths annually in the U.S. alone. (4) And by extremely conservative estimate, the U.S. Centers for Disease Control and Prevention reports more than 23,000 Americans die annually from antibiotic-resistant bacterial infections. (5)

So why are we focusing limited public health resources disproportionately on the rarest threats? And why are rare risks from bats often exaggerated? The answers are simple. Bats are little known, widely feared, easy to sample, and have few defenders. Also, new viruses can be found wherever we look. These combined facts make bats uniquely vulnerable to a seemingly perfect storm.  Speculation linking them to equally little known, but scary viruses has proven extremely lucrative in gaining unprecedentedly large grants and media readership, while diverting limited public health funds from far higher priorities. (6) (7)

Historically, bats have one of our planet’s finest track records of living safely with humans. Millions live in cities from America to Africa, Asia, and Australia, and have not caused even one of the world’s great pandemics. Diseases associated with bats are easily avoidable, mostly by simply not handling them. (7) Until more is known about Marburg, African caves where the virus may exist should be avoided.

For those visiting Africa, risks from mosquito-transmitted malaria or dog-transmitted rabies are orders of magnitude higher than those from any of the so-called “emerging,” but ancient, diseases speculated to be associated with bats. Our real fears should focus on preventing further loss of these already alarmingly declining, but ecologically and economically essential animals.(7)

(more…)

Read More

Merlin Tuttle Bat Flash

Bat Flash! Smithsonian Promotes Misleading Virus Hunter Claims

By Merlin Tuttle
8/3/18

 

The July 11, 2018 edition of Smithsonian.com contains another highly misleading story on virus hunters protecting us from pandemics. The story by Katherine J. Wu is titled, “A Never-Before-Seen-Virus Has Been Detected in Myanmar’s Bats.” Wu claims that to prevent the next Pandemic, we need to pinpoint it at the source. She then reports that “researchers in Myanmar have hit pay dirt with a never-before-seen virus that infects wrinkle-lipped bats—a virus in the same family as the ones that cause SARS and MERS.”

Merlin with a young Black flying fox (Pteropus alecto).

After further extolling the virtues of virus hunting, she quotes Chelsea Wood, reportedly a conservation ecologist, as saying that, “Tropical rainforests [in particular] are just cesspools of viral diversity—the highest viral diversity on the planet.” The headline and rhetoric in this article sound more like grocery store tabloid writing than something one would expect from America’s leading institution of science.

This story is a complete contradiction of a paper by epidemiologists, Edward Holmes, Andrew Rambaut, and Kristian Andersen, titled “Pandemics: spend on surveillance, not prediction” which appeared in the Journal Nature on June 7, 2018. [1] Referring to virus hunting, they conclude that “given the rarity of outbreaks and the complexity of host-pathogen interactions, it is arrogant to imagine that we could use such surveys to predict and mitigate the emergence of disease.” They emphasize that broad surveys of animal viruses have little practical value when it comes to disease prevention. They conclude that such approaches are an extremely costly waste of limited public health funds and warn that “Trust is undermined when scientists make overblown promises.” (more…)

Read More

Epidemiologists Acknowledge Virus Hunting as a Costly Waste

By Merlin Tuttle
6/15/18

Leading epidemiologists are finally acknowledging that the recently huge expenditures for virus hunting (mostly focused on bats) have little practical value in disease prevention. The June 7 issue of Nature contains a key paper titled, “Pandemics: spend on surveillance, not prediction.” In it Edward Holmes, Andrew Rambaut, and Kristian Anderson combine their expertise to advocate a much-needed change of course in prevention of viral transmission from animals to humans, one that may also considerably brighten the future of bats.

They emphasize that broad surveys of animal viruses have little practical value when it comes to disease prevention and warn that “Trust is undermined when scientists make overblown promises about disease prevention.” They “urge those working on infectious disease to focus funds and efforts on a much simpler and cost-effective way to mitigate outbreaks—proactive, real-time surveillance of human populations.”

Bats have an exceptional record of living safely with humans. But, they have been disproportionately searched, and victimized by virus hunter speculation, apparently because they are unpopular and easy to sample. This is an Angolan free-tailed bat (Mops condylurus), a species targeted for eradication following premature speculation linking it to the 2014 Ebola outbreak.

(more…)

Read More

Thanks to Mongabay for Balanced Nipah Reporting

By Merlin Tuttle
5/31/18

We greatly appreciate Mongabay for its handling of the Nipah virus outbreak in Kerala, India. Its story, “Nipah infection in Kerala: Don’t blame the bats alone; improve public health,” appeared on May 30, authored by Haritha John and Gopikrishna Warrier. Needless alarm was avoided by balanced reporting. As so often is the case, the rarest threats make the biggest news. Fortunately, in this instance, the news was accurate, so did not cause needless panic.

(more…)

Read More

Merlin Tuttle Bat Flash

Bat Flash! Respond to Misleading Attempt to Encourage Fear of Bats 12/1/17

By Merlin Tuttle
12/1/17

The November 23, 2017 issue of THE CONVERSATION lures readers with an important sounding, bat-friendly title, “Can bats help humans survive the next pandemic?” However, two-thirds of the article is devoted to promoting fear instead of progress and is based on questionable sources. This is particularly disturbing given the publication’s stated objective—“Fight for Truth in Journalism.”

This story is a simple repeat of close to a decade of often exaggerated speculation attempting to link viruses found in bats to transmission of scary but relatively rare ones like SARS and MERS to humans. Documented transmission of any disease from bats to humans remains exceedingly rare. And no one has successfully shown transmission of SARS or MERS from bats to other mammals. Dromedary camels are now well known to have been the source of MERS in humans for decades, likely longer.

Villagers harvesting bat guano from Rakang Cave in Thailand. For as long as anyone can remember no unusual illness has occured, one of many similar contradictions that virologists forecasting world pandemics from bats cannot explain.

(more…)

Read More

A Terrifying Time for Bats

A Terrifying Time for Bats
By Merlin Tuttle
7/2/17

The past month has seen a virtual explosion of premature speculation presented as though it were now proven fact, much of it traceable to a single article titled, “Bats are global reservoir for deadly coronaviruses,” that appeared in the June 14, 2017 issue of Nature. We’ve already issued a Bat Flash alert responding to this article, and to predecessors, all apparently part of a single cleverly planned campaign.

An adult male Straw-colored fruit bat (Eidolon helvum) from Kenya. This is the species first blamed for the “index case” of Ebola in the 2014 outbreak in West Africa. The species was soon exonerated. In fact, it is so resistant to Ebola that it is an unlikely source. Recent studies suggest a source other than bats.

Sensational speculation has become widely cited as fact1, with spin-off damage that will be exceedingly difficult to reverse. All who truly care about bats have cause to be deeply concerned.

Due to scary speculation attempting to link the SARS outbreak of 2002 to bats, bats have recently become central in the search for viruses2.  Thus, rapid advances in viral detection alone may have caused major bias. Also, the number of viruses found in bats is not necessarily indicative of risk.2 Many viruses are innocuous or even beneficial,3 including some that are closely related to deadly ones.4 Finally, the paper in question is based on models, and models are notorious for mistaken conclusions, regardless of the amount of data analyzed.5

A far more meaningful analysis should have considered the historic rarity of viral spillover from bats to humans. Many media stories now claim bats to be the primary source of so-called “emerging infectious diseases” like Ebola, though most of these speculations remain unproven.6- 7

Thai women collecting guano in Rakang Cave. These women spend countless thousands of hours sweeping up the guano and bagging it while being pooped on by hundreds of thousands of fruit- and insect-eating bats high overhead and report no ill effects.

Proponents of such speculation still cannot explain why hundreds of bat biologists, millions of people who eat bats, and the millions more who share cities with huge bat colonies are no less healthy than others. They can’t explain why bats artificially infected with Ebola haven’t become contagious or why virologists haven’t even been able to find live virus in the thousands of bats examined. Certainly, like all other mammals, bats must be capable of harboring at least a few dangerous viruses. Nevertheless, bats still have one of our planet’s finest records of living safely with humans.1

Children begin helping collect guano almost as soon as they can walk.

(more…)

Read More

Merlin Tuttle Bat Flash

Bat Flash! Nature Sensationalizes Bat Coronaviruses

By Merlin Tuttle
6/13/17

The June 12, 2017 story by Amy Maxmen, titled “Bats are global reservoir for deadly coronaviruses,” published in Nature, continues the needlessly sensational presentation of bats as exceptionally dangerous animals. By simple insertion of the words “global” and “deadly” in the title, it implies bats worldwide to be a serious menace to human health.

The article begins by stating that “Bats are the major animal reservoir for coronaviruses worldwide….” In the reported study, nearly twice as many bats as rodents, shrews, and primates combined were examined, not surprising. The emphasis on easily captured bats, likely centered on colonial species, is an approach that appears to have become the norm. And it’s impossible to know the extent of resulting bias.

A Chinese horseshoe bat (Rhinolophus sinicus) from Hong Kong. It has been suggested that a coronavirus found in this species is the direct ancestor of the virus that causes SARS. Nevertheless, despite seemingly endless speculation, no experiment has ever shown these, or any other bats, to be capable of transmitting a coronavirus to primates or other animals.

(more…)

Read More