avian flu outbreak

March 6, 2023. CDC twenty four seven. More than 77 million poultry, most raised in crowded. More than 40 million egg-laying hens have been culled in the U.S. alone, making it the worst outbreak on record. "If you have a bird that has a very short feeding window before it's ready for harvest, that can be a lot more challenging because you also need to allow the withdrawal period after the vaccine before the bird is harvested," she adds. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. The deaths of chickens, turkeys and other birds represent the worst U.S. animal-health disaster to date, topping the previous record of 50.5 million birds that died in an avian-flu outbreak in 2015. Experts say poultry farms should be credited with limiting the virus as much as they have, hailing the success of surveillance and biosecurity programs. But the disease was eradicated in North America that same year, largely because it did not seriously impact wild birds, which made containment through culling poultry relatively easy. Many people are concerned about the 2022-2023 outbreak of avian influenza, or bird flu, that is affecting domestic poultry, waterfowl, raptors, and some shorebirds in the U.S. and Canada. In addition, we have better diagnostic tests for much more rapid and improved detection of avian influenza compared to 20 to 30 years ago, using molecular diagnostics such as polymerase chain reaction (PCR) tests the same method labs use to detect COVID-19 infections. It's really a call to arms saying, we can't afford to address this from our individual silos. Speaking about this death to AP, James Wood, the head of the department of veterinary medicine at Cambridge University, said there is no reason to be unduly concerned about human infection with bird flu. And right now, a specific version of the virus known as clade 2.3.4.4b is ruling the roost. Low pathogenic disease is less contagious and easier to contain than the highly pathogenic variety. Learn more about the latest avian influenza situation in the United States and globally. > Subscribe Free to Email Digest, New research suggests that lonely individuals process the world differently than their peers, regardless of their social network size, potentially contributing to their feelings of. Saving Lives, Protecting People, Current U.S. Bird Flu Situation in Humans. The US is no stranger to the impact of the disease, with the H5N8 strain having led to the culling of 50 million birds in 2015. USDA ERS - Chart Detail Right now, the H5N1 bird flu situation remains primarily an animal health issue. Federal agencies, state agencies, the agriculture sector and wildlife management, we are all going to have to deal with this together, because we can't afford not to.". This is a concern because studies have shown that only one or two mutations in the viral genome are enough to switch receptor binding from a2,3-linked sialic acid to the human a2,6-linked sialic acid. (2023, April 19). Just one or two mutations could make H5N1 more efficient at infecting humans. Right now, the best way people can protect themselves from H5N1 is to avoid contact with infected birds. Yuko Sato, The Conversation. As of early April, the outbreak had caused the culling of some 23 million birds from Maine to Wyoming. The viruss prevalence in the wild presents new challenges for its containment. Scientists Investigate a Bird Flu Outbreak in Seals Avian influenza vaccines can reduce clinical signs, sickness and death rates in domestic poultry, but they would not prevent birds from becoming infected with the virus. This webpage will be updated at 2 PM EST each Wednesday to reflect any new data posted in the previous week. USDA APHIS | Avian Influenza Avian influenza Type A viruses (bird flu viruses) do not normally infect people, but rare cases of human infection have occurred with some bird flu viruses. "For whatever reason, turkeys and layer birds tend to be more susceptible" to the virus, says Amy Hagerman, an assistant professor at Oklahoma State University who specializes in agricultural economics. These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. Eggs on a shelf at Pioneer Supermarkets in Brooklyn, N.Y., on Thursday. Over the last few years, a new variant of H5N1 has spread widely through wild and domestic bird populations around the world. The patient recovered after experiencing a few days of fatigue. Avian Influenza Outbreak 2022-2023: Should You Take Down Your Bird Bird flu infections in people are rare, but possible. Experts are concerned that a new global disease outbreak, possibly worse than Covid-19, might begin any day. These cookies may also be used for advertising purposes by these third parties. They help us to know which pages are the most and least popular and see how visitors move around the site. A new deadly bird flu is infecting wild birds and may not go away - NPR In 2015, an outbreak of highly pathogenic H5N8 in the U.S. led to the culling of 50 million poultry birds. What you need to know about the avian influenza outbreak Nearly 58 million birds from commercial and backyard flocks have been wiped out in the U.S. since last February, according to the U.S. Department of Agricultures Animal and Plant Health Inspection Service. Higher prices for eggs and poultry meat in the U.S. are one result. Avoid direct contact with wild birds and observe them only from a distance, if possible. It's the worst toll on the poultry industry since 2014-2015, when more than 50 million birds died. April 14, 2023. Save my name, email, and website in this browser for the next time I comment. Six main hemagglutinin (HA) subtypes of bird flu viruses have infected people to cause acute respiratory illness (H3, H5, H6, H7, H9, and H10 viruses). The CDC states that like any poultry or eggs, heating food to an internal temperature of 165F kills any bacteria and viruses present, including HPAI viruses. Importers would not be able to distinguish vaccinated birds from infected birds based on the routine testing, so they might ban all U.S. poultry exports. For commercial and backyard flocks, many early infections centered along the intersection of the Central and Mississippi flyways of migratory wild birds. "Unlike H5N8, this disease is heavily impacting wild birds," Johanna Harvey, a postdoctoral researcher and the lead author of the study published in Conservation Biology at the University of Maryland, said. Thats when production of eggs is hammered.. And if the outbreak lingers into spring, infections could become even more difficult to prevent as a new wave of bird migrations begin. An avian influenza outbreak has been detected in the West African nations of Senegal and The Gambia. The sun can, for instance, naturally disinfect surfaces while gloomier days help viral particles survive on surfaces contaminated by infected bird poop, Lorenzoni said. ", "These are actually discussions that are going on now," Webby says, describing ideas such as what kind of post-vaccination surveillance would be needed to "make sure your trading partners are happy that the virus is not circulating silently.". In 2015, about 30% of the cases were traced directly to wild bird origins, compared to 85% this year, the USDA told Reuters. Avian influenza can spread quickly and appears to be almost 100% fatal for some species. "Unlike H5N8, this disease is heavily impacting wild birds," said Johanna Harvey, a postdoctoral researcher at UMD and lead author of the study. More than 40 million egg-laying hens have been culled in the U.S. alone, causing the price of eggs nationwide to skyrocket, Lorenzoni said. But H5N1 poses new challenges. ScienceDaily. Avian flu viruses have evolved to infect cells of the intestine, while human flu viruses have evolved to infect cells of the respiratory tract. Highlights in the History of Avian Influenza (Bird Flu) Timeline 2020-2023, Reported Global Reported Global Human Infections with Highly Pathogenic Avian Influenza A(H5N1) (HPAI H5N1) by Country, 1997-2022, Classification of bird flu viruses section, Reported Human Infections with Bird Flu Viruses, Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD), Bird Flu Detections Reporting in Wild Birds, Bird Flu Detections Reporting in Backyard and Commercial Birds, Frequently Asked Questions about Avian Influenza, Spread of Bird Flu Viruses Between Animals and People, Past Examples of Probable Limited, Non-Sustained, Person-to-Person Spread of Avian Influenza A Viruses, Reported Human Infections with Avian Influenza A Viruses, Information for People Exposed to Birds Infected with Avian Influenza Viruses of Public Health Concern, Recommendations for Worker Protection and Use of Personal Protective Equipment (PPE), Self-Observation Instructions for Demobilizing Bird Flu Responders, Highlights in the History of Avian Influenza, Questions & Answers: H5N1 Genetic Change Inventory, Interim Guidance on Testing, Specimen Collection, and Processing for Patients with Suspected Infection with Novel Influenza A Viruses with the Potential to Cause Severe Disease in Humans, Diagnostics for Detecting H7N9 Using rRT-PCR, Infection Control Within Healthcare Settings for Patients with Novel Influenza A Viruses, For Clinicians: Evaluating and Managing Patients, Use of Antiviral Medications for Treatment of Human Infections with Novel Influenza A Viruses, Antiviral Chemoprophylaxis of Persons Exposed to Birds with Avian Influenza A Viruses, Follow-up of Close Contacts of Persons Infected with Novel Influenza A Viruses and Use of Antiviral Chemoprophylaxis, U.S. Department of Health & Human Services, Sporadic highly pathogenic avian influenza A(H5N1) virus infections in, The first case of an avian influenza A(H5N1) virus in a person in the United States was reported on April 28, 2022. Sign up for notifications from Insider! Avian influenza A (H5N1) was first detected in the Region of the Americas in birds in December 2014. "Just a lot . Northern pintail ducks are among the types of birds that H5N1 bird flu virus infections have been identified in the United States in 2022. You will be subject to the destination website's privacy policy when you follow the link. Though most cases were detected in Oregon, positive . This is happening as we speak, and this is why Im afraid influenza is going to be with us for a long while.. The virus has hit many turkey farms but because those operations tend to be smaller and the cases have been spread out over time and space, producers have mostly been able to absorb the losses, building up stocks of frozen turkey ahead of the end-of-year holidays. Globally since 2003, countries have reported rare, sporadic human infections with H5N1 bird flu viruses to the World Health Organization (WHO). To receive email updates about this page, enter your email address: We take your privacy seriously. Yuko Sato, The Conversation Better known as the bird flu, avian influenza is a group of flu viruses that is well adapted to birds. What consumers need to know about the avian flu outbreak The spread of bird flu viruses from one infected person to a close contact has occurred rarely in other countries in the past, and when it has happened, it has been limited and not sustained,and didnotspread beyond close contacts. At least 50.54 million birds have died this year from the Avian flu, according to new data from the U.S. Department of Agriculture.. Why it matters: This represents the highest amount of deaths of chickens, turkeys and other birds since 50.5 million died from an outbreak in 2015, according to Reuters. It is true that the farmed minks were confined in close quarters, like chickens on a poultry farm, so that may have contributed. Seasonal flu vaccination will not prevent infection with bird flu viruses, but can reduce the risk of getting sick with human and bird flu viruses at the same time. How do we track it in wild birds? Birds often die after becoming infected. The most important mutational changes affect the tissue tropism of the virus its ability to infect a specific part of the body. Another central issue is the difficulty of surveillance of knowing whether a bird is infected with a deadly influenza virus but isn't showing symptoms because they've been vaccinated. Subscribe to Here's the Deal, our politics newsletter. Rescued chickens gather last year in an aviary at Farm Sanctuarys Southern California Sanctuary in Acton, Calif. H5N1 spread very efficiently between the minks and caused clinical signs of illness and death in the mink populations where it was detected. April 24, 2023. Thank you. USDA has publicly posted the genetic sequences of several of recently detected H5N1 bird flu viruses found in U.S. wild birds and poultry. Illness in humans from all bird flu virus infections has ranged in severity from no symptoms or mild illness to severe disease that resulted in death. They concluded that there is an urgent need for unprecedented coordination at a national and regional-scale to manage the spread of a disease reaching across jurisdictions and disciplines. A wave of the highly pathogenic H5N1 avian flu has entered Southern California, driven by wild bird migration. The Biden administration is considering vaccinating farmed poultry flocks, but the logistics could be quite complicated. Some birds have died from the disease itself, but the vast majority are being culled through flock "depopulation," to try to stop the virus from spreading. The data show the progression of highly pathogenic H5N1 as it spread from Eurasia to the U.S. where it was first documented in late 2021. In addition, more than 58 million domestic poultry were infected or had to be culled to limit the spread of infection in the U.S. and 7 million in Canada. "This is a novel virus for North American birds, so no one knows if their immune systems will adapt, or how long that will take, or what that will look like. Scientists continue to monitor the ongoing global avian influenza outbreak also referred to as bird flu that has killed millions of birds and has now crossed over to some species of mammals. 'Pandemic potential': bird flu outbreaks fuelling chance of human The USDA recommends cooking eggs and poultry to an internal temperature of 165 degrees Fahrenheit (74 Celsius). By October 2022, the disease had resulted in 31 reported wild bird mass mortalities, accounting for an estimated 33,504 wild bird detections in the U.S. and Canada. Thank you for taking the time to confirm your preferences. Hagerman warns that in a time of inflationary pressure and supply-chain snags, it can be hard to directly link a price hike to the virus. The views expressed in this article are those of the author alone and not the World Economic Forum. An outbreak of highly pathogenic avian influenza (HPAI) in chicken and turkey flocks has spread across 24 U.S. states since it was first detected in Indiana on Feb. 8, 2022. With avian influenza viruses, it is not possible to make effective human vaccines in advance, because we dont know exactly what the genetics of the virus will be if it starts to spread well in humans. According to the U.S. Centers for Disease Control and Prevention, the risk to public health from this outbreak is low.
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