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Popular flea collar linked to almost 1,700 pet deaths. The EPA has issued no warning.

Popular flea collar linked to almost 1,700 pet deaths. The EPA has issued no warning.

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Popular flea collar linked to almost 1,700 pet deaths. The EPA has issued no warning.

Johnathan Hettinger
 |  Midwest Center for Investigative Reporting
Pet collar linked to almost 1,700 pet deathsSeresto, developed by Bayer and sold by Elanco, is the top-selling collar if its kind on Amazon.USA TODAY, USA TODAYRhonda Bomwell had never used a flea and tick collar before. Pierre, her 9-year-old Papillon service dog, was mostly an indoor animal.Still, her veterinarian recommended she purchase one, so Bomwell went to the pet store near her home in Somerset, New Jersey, and selected Bayer’s Seresto collar. A day later, on June 2, 2020, Pierre had a seizure, collapsing while Bomwell was making dinner. Lying on his back, the dog stopped breathing and his eyes rolled back. Bomwell tried giving him CPR. Then she called the police. An officer helped her lift the dog into her car, and she rushed him to the hospital. Pierre died before he could receive medical treatment. Bomwell didn’t think to take off Pierre’s collar.“I just didn’t put it together,” she said.Bomwell isn’t alone. Seresto, one of the most popular flea and tick collars in the country, has been linked to hundreds of pet deaths, tens of thousands of injured animals and hundreds of harmed humans, U.S. Environmental Protection Agency documents show.Yet the EPA has done nothing to inform the public of the risks.Seresto, developed by Bayer and now sold by Elanco, works by releasing small amounts of pesticide onto the animal for months at a time. The pesticide is supposed to kill fleas, ticks and other pests but be safe for cats and dogs. But thousands of pets are being harmed, according to federal documents obtained through a public records request from the Center for Biological Diversity, a nonprofit organization that watchdogs the EPA as part of its work to protect endangered species. The center provided the documents to the Midwest Center for Investigative Reporting.Since Seresto flea and tick collars were introduced in 2012, the EPA has received incident reports of at least 1,698 related pet deaths. Overall, through June 2020, the agency has received more than 75,000 incident reports related to the collars, including nearly 1,000 involving human harm.The EPA is in charge of regulating products that contain pesticides. The agency has known about these incidents for years but has not informed the public of the potential risks associated with this product, said Karen McCormack, a retired EPA employee who worked as both a scientist and communications officer. McCormack said the collars have the most incidents of any pesticide pet product she’s ever seen.“The EPA appears to be turning a blind eye to this problem, and after seven years of an increasing number of incidents, they are telling the public that they are continuing to monitor the situation,” she said. “But I think this is a significant problem that needs to be addressed sooner rather than later.”The EPA declined to say how Seresto compares to other pet products. But in response to a question about whether the product is safe, an agency spokesperson said in an emailed statement that the two pesticides in Seresto have “been found eligible for continued registration” based on best available science, including incident data.“No pesticide is completely without harm, but EPA ensures that there are measures on the product label that reduce risk,” the spokesperson said. “The product label is the law, and applicators must follow label directions. Some pets, however, like some humans, are more sensitive than others and may experience adverse symptoms after treatment.”Amazon, where Seresto is the top-selling collar, also has received numerous complaints about the product from customers who detailed significant issues. Dozens of people over the years have claimed the collar caused skin rashes in their pet. Others said it led to neurological issues in their pets.Despite the many warnings, Amazon has not removed the product from its online marketplace. Amazon did not respond to multiple requests for comment for this story.This isn’t the first time that the EPA has failed to properly regulate flea and tick collars containing pesticides, said Miriam Rotkin-Ellman, a senior scientist at the Natural Resources Defense Council.The NRDC filed a petition against the agency more than a decade ago over its approval of a different pesticide than the one used in Seresto that is linked to cancer and brain development issues in children. In April 2020, a federal appeals court called the EPA’s refusal to respond to NRDC’s requests “nothing short of egregious” and told agency officials to make a decision on whether to ban the pesticide within 90 days. The EPA decided not to ban the pesticide, called tetrachlorvinphos. That pet collar continues to be sold under the brand name Hartz Ultraguard, Hartz InControl and Longlife.NRDC has challenged that decision; that lawsuit is currently pending. Even so, the number of incidents linked to that pesticide pales in comparison to those linked to Seresto. From 1992 to 2008, the EPA received about 4,600 incident reports regarding pet collars containing tetrachlorvinphos, including 363 deaths, according to EPA documents. Broken down per year, that’s 30 times fewer incidents and 10 times fewer deaths than Seresto.And those are most likely an undercount, said Nathan Donley, a senior scientist at the Center for Biological Diversity and an expert on U.S. pesticide regulation. Donley said the number of reported incidents for Seresto is “just the tip of the iceberg.”In order to report an incident, a person has to make the connection between the collar and the issue with the dog, understand who to contact and how to report it, he said. “Most of the time, people are not going to make the connection or they’re not going to take an hour or so out of the day and figure out how to call and spend time on hold,” Donley said.He said the incident data creates lots of questions about EPA processes. “My God, if this doesn’t trigger a concern, that’s a fundamental problem with the process,” Donley said. “The fact that EPA has not done anything to alert the public that there might be an issue here, it strikes me as bordering on criminal. The EPA has this system in place to compile information and it’s just collecting dust in some database.”A big businessPet collars are big business. In its 2019 annual report, German agribusiness and pharmaceutical company Bayer reported revenue of more than $300 million on Seresto alone. The company sold its animal health division to Elanco Animal Health, a former subsidiary of Eli Lilly and Co., for $7.6 billion in 2019. The deal was finalized in 2020. As part of the deal, Bayer received $2.3 billion in Elanco stock, which the company said it would sell over time.Bayer did not respond to multiple requests for comment.Since being spun off as its own company in 2019, Elanco has lobbied the EPA quarterly on issues relating to animal health, according to the the nonprofit Center for Responsive Politics, which maintains a website tracking political contributions. Over two years, the company has spent $1.6 million on lobbying, records show.Keri McGrath, a spokeswoman for Elanco, said in an email the company “takes the safety of our products very seriously and thoroughly investigates potential concerns related to their use.” McGrath pointed out that regulatory authorities have approved the product in more than 80 countries, and the EPA is in the final stages of re-approving both pesticides. There is no timeline on the final decision.McGrath said that global data shows that 1 in 568 users of Seresto have an incident and “the majority of these incident reports relate to non-serious effects such as application site disorders, e.g. a reddening of the skin or hair loss below the collar.”“Keep in mind that the existence of an adverse event report does not necessarily mean the product caused the problem,” she said. “Causality between the observed signs and the use of the product is evaluated on a case-by-case basis. That said, every adverse event collected, regardless of causality, is reported to the authorities.”The EPA did not respond to a request about how Seresto compared to other flea and tick collars in terms of incidents. The Midwest Center has filed a Freedom of Information request for the incident database, but that request has not yet been filled. The extent of the damage is uncommon, said McCormack, the former EPA staffer.“I’ve never seen any product that had 75,000 incidents,” McCormack said.Seresto’s pesticides more toxic togetherThe EPA approved Seresto collars on March 16, 2012. The collars are designed to work for eight months. Under the Federal Insecticide, Fungicide and Rodenticide Act, the EPA must determine a pesticide product will not cause “unreasonable effects on the environment.”This determination requires weighing harms versus benefits, including assessments of risks to human health and the environment. Seresto contains two pesticides: imidacloprid and flumethrin. Imidacloprid belongs to the neonicotinoid class of insecticides, which are the most commonly used insecticides on crops in the U.S. Despite neonicotinoids being connected to massive die-offs of non-target insects such as bees and butterflies, the EPA proposed re-approving imidacloprid and other class members last year. The pesticide is banned in the European Union for outdoor use but allowed in pet collars. There is also growing evidence that mammals can be harmed by these pesticides as well.Flumethrin, EPA documents show, is only an active ingredient in one product: Seresto. Like with most pesticides, the data supporting the registration of Seresto was conducted by the company that produced it, Bayer. The majority of the studies were looking at each pesticide individually. However, a 2012 Bayer study found they have a “synergistic effect,” meaning they are more toxic together on fleas. The study found that the “unique pharmacological synergism” works as quickly as six hours to prevent ticks from attaching and feeding, preventing disease transmission. Additionally, eight companion animal safety studies were conducted by Bayer looking at the effect of Seresto collars on domestic cats and dogs. The EPA used these studies to approve Seresto. The California Department of Pesticide Regulation took issue with the validity of two of the studies but approved the collars anyway. Another issue could be a reaction of inactive ingredients, which are unknown and have caused problems in spot-on treatments, said Donley of the Center for Biological Diversity.Donley, who has a doctorate in cell and developmental biology and is a former cancer researcher, said this “synergistic effect” likely extends to pets. He said he wasn’t sure what makes the two pesticides so likely to cause harm, but it is clear something is wrong with the product.“You don’t even see these kinds of numbers with many agricultural chemicals,” Donley said.“For whatever reason, this combination is just really nasty.”History of unsafe pet treatmentsThere are currently 18 flea and tick collars on the market: three that are approved for both dogs and cats (including Seresto), 10 approved for dogs and five for cats, according to the National Pesticide Information Center.In addition to allowing tetrachlorvinphos in pet collars despite evidence of its safety issues, the EPA also had approved the use of another pesticide linked to cancer and brain development problems – propoxur, which was sold under many brand names, including Bio Spot, Scratex Color, Zodiac, Sergeant’s Dual Action and Sentry Dual Action.Rotkin-Ellman’s research showed residues were high enough to pose a risk to children and adults who play with pets that were wearing the collars.In April 2016, pesticide companies voluntarily agreed to stop using propoxur to help protect children’s health. The brand names that used propoxur have switched to other active ingredients.In addition, in 2010, the EPA increased label requirements and limited some inert ingredients in spot-on treatments, which are applied to a specific area of a pet. This happened after incident data showed the treatments were causing hundreds of pet deaths, as well as issues such as irritation, rashes and hair loss, gastrointestinal problems and seizures.Collars have caused seizures, rashes in humansIt’s not just pets that are being harmed, EPA documents show.Between 2013 and 2018, 907 incidents were reported with humans, according to a September 2019 EPA assessment of human health risk.The assessment determined that there were 19 severe incidents. Of those, eight people had dermal symptoms, such as a rash or hives, and seven had neurological symptoms, which included numbness and headaches. Incidents listed by the EPA included:A 12-year-old boy who slept in a bed with a dog wearing a collar started having seizures and vomiting. He had to be hospitalized. A 67-year-old woman who slept in a bed with a dog wearing a collar reported having heart arrhythmia and fatigue.A 43-year-old man put collars on eight dogs and slept in the same bed as four of the dogs. A week later, he developed ear drainage and nasal and throat irritation and was told by a doctor that he had a hole in his ear drum. He removed the dog collars and the symptoms went away. He later reapplied the collars and the symptoms returned.An October 2016 EPA bulletin responded to citizen concerns about children being exposed to Seresto, saying it had found exposure to the collars to be negligible. “As stated in the precautions on the label, do not allow children to play with the collars. In addition, try to keep the pet away from young children for a day after putting on the collar to minimize exposure,” the bulletin said.“It’s really not just happening to animals. It’s happening to people who pet them as well,” Donley said. “I have two young kids who are all over our dog all the time. I can imagine how highly exposed people would be to residues.”‘It’s just been a nightmare’To Bomwell, the worst part was the lack of warning. Pierre had never been sick or had a seizure. He was just 9, so she thought he had half a decade left. Her last dog had died at 18. Plus, she felt like she was responsible. She was the one who put the collar on.“It was so bizarre,” Bomwell said. “It’s just been a nightmare.”Even if the EPA had not received tens of thousands of complaints, a cursory search of the web would find dozens of posts from pet owners warning others to be careful with the collars, including a letter to an animal doctor column in the St. Louis Post-Dispatch in 2013, a radio news story in New York in 2016 and extensive comments on pet forums.Without the federal government stepping in, individuals are left in the dark. That’s something Ron Packard, of Brockton, Massachusetts, is hoping to address.In the days after the death of his two dogs in June 2019, Packard did what any person looking for answers does: He went to the internet.Two of Packard’s four dogs had recently had seizures on the same day, before becoming lethargic and vomiting and finally, refusing to eat. He brought them to the veterinarian, who couldn’t find a problem. Within weeks, the two previously healthy cavachons, 10-year-old Danny and 5-year-old Dominic, were both dead. The only thing Packard could figure out was both dogs had started wearing Seresto flea and tick collars a month before.“Thirty-three and 54 days later, they’re both dead,” Packard said.Packard created a Facebook page, asking people who had similar issues to share their stories. Today, the page fills up with pictures and stories like Packard’s. A dog starts wearing a collar. Within weeks, a dog will have a seizure, sometimes it will later die. Other stories aren’t quite as extreme. Loss of hair around the neck. Lethargy. Packard encourages everyone to report their story to the EPA.“I don’t want others to go through what we went through,” he said. “Every time I read the stories, it brings me back to my dogs. But if I can save a few pets, I can deal with it.”This story is a collaboration between USA TODAY and the Midwest Center for Investigative Reporting. The center is an independent, nonprofit newsroom covering agribusiness, Big Ag and related issues. USA TODAY is funding a fellowship at the center for expanded coverage of agribusiness and its impact on communities.


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