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Avian flu has infected dairy cows in more than a dozen states – a microbiologist explains how the virus is spreading
The H5N1 avian flu has spread from birds to dairy cows, causing significant outbreaks and posing risks to farm workers and other animals, though pasteurized milk remains safe.
Jenna Guthmiller, University of Colorado Anschutz Medical Campus
The current strain of avian flu, H5N1, is responsible for the culling of millions of domestic birds and has sickened more than a dozen farmworkers in 2024, most recently in Colorado.
The Conversation U.S. asked immunologist and microbiologist Jenna Guthmiller from the University of Colorado Anschutz Medical Campus to explain the historical roots of H5N1, its mode of transmission and how to avoid coming into contact with it.
What is H5N1?
H5N1 is a subtype of influenza A viruses. Other commonly known influenza A virus subtypes include H1N1 and H3N2, which cause seasonal outbreaks in humans.
Unlike H1N1 and H3N2, H5N1 largely infects wild birds, with waterfowl such as ducks and geese being the natural reservoirs for H5N1 viruses. Most H5N1 viruses are highly pathogenic avian influenza, meaning spillovers into other bird populations can lead to high mortality rates, including domesticated poultry.
H5N1 viruses were first identified in 1959 due to an outbreak in domesticated chickens in Scotland. In 1996, waterfowl were identified as the natural reservoir for H5N1.
Since its identification, H5N1 viruses have led to four major outbreaks: in 1997, 2003-2005, 2015 and 2021-to-present. The outbreaks in 1997 and 2003-2005 led to substantial spillover to humans.
Since 2003, nearly 900 H5N1 infections in humans have been recorded. Of those infections, more than half were fatal.
Where did H5N1 originate?
The current outbreak of H5N1 started in late 2021 and derives from the virus that caused a major outbreak in 2015.
Since 2021, H5N1 strains have spread to six continents by migratory birds. Spillover to domestic poultry has led to the culling of millions of domestic birds
Researchers have documented the current H5N1 strain in numerous mammals, with it largely affecting aquatic mammals like seals and scavenger mammals. Sporadic spillover to domestic mammals has been recorded, including to minks, goats and alpacas.
In March 2024, the U.S. Department of Agriculture reported an outbreak of H5N1 in lactating dairy cows. As of Aug. 27, 192 herds in 13 states have been confirmed H5N1 positive.
Dairy cow-associated H5N1 viruses have since jumped back into wild birds, and recent outbreaks in domestic poultry resembled H5N1 in dairy cows. Between May and July 2024, 13 confirmed H5N1 infections have occurred in humans, with all cases directly linked to dairy farms and poultry culling. https://www.youtube.com/embed/jhKI2Zskplg?wmode=transparent&start=0 The concern is that the virus could evolve to allow human-to-human transmission.
Why did the avian flu become more widespread?
It is unclear why H5N1 has become such a widespread problem. H5N1, like all influenza viruses, rapidly mutates to infect new hosts. However, H5N1 has several features that could increase its host range.
First, H5N1 viruses use a protein called hemagglutinin that allows H5N1 to infect with new hosts.
Second, my research group identified a mutation in H5N1 viruses causing the dairy cow outbreak that allows hemagglutinin to bind to its receptor more efficiently.
Lastly, H5N1 viruses are mutating genes associated with replication and immune evasion that are known to increase the infection of mammals.
Together, these factors could heighten H5N1 transmission and increase H5N1 spillover to mammals.
How is the strain transmitted to dairy cattle?
H5N1 viruses are largely causing infections in the mammary glands of cattle rather than the respiratory tract, which is the main site of infection for other influenza viruses in mammals. Recent studies have shown that the mammary tissue has receptors for H5N1, which could make this tissue susceptible to infection.
Since the infection is largely restricted to the mammary glands, researchers believe that H5N1 is being transmitted to cows by contaminated milk equipment, particularly the milking apparatus that attaches to the cow udders. Transmission across farms is due to infected cattle movement and shared equipment and personnel across dairy farms.
To reduce transmission, in April 2024, the USDA put in testing requirements for when cows are transported across state lines. In addition, Colorado, the state with the greatest number of positive herds, requires weekly testing on farms to identify infected herds.
What are the risks to people and other animals?
H5N1 does not pose a risk to the general public, as this virus is not known to transmit between people. As all known cases were those with direct contact with infected animals, people with occupational exposure to H5N1-infected cows and poultry continue to be at the greatest risk of infection.
People with occupational hazards should be aware of the H5N1 symptoms – similar to those of a cold – such as congestion, sore throat and fatigue, as well as conjunctivitis, more commonly known as pink eye. For more information, see the Centers for Disease Control and Prevention’s webpage on avian influenza in people.
Domestic and wild animals near dairy farms are at high risk of infection. Particularly, barn cats that have been fed raw milk have been reported dead on dairy farms with infected cows, with these animals coming back positive for H5N1.
In addition, spillover of H5N1 to other domesticated farm animals near infected dairy cows has been recorded.
What are the best ways to keep farm workers safe?
Using personal protective equipment, such as goggles and gloves, remains the best way to prevent the transmission of H5N1 to humans and from humans back to animals. People working around poultry or dairy cattle should also be aware of biosecurity measures, such as not wearing the same clothes and boots when traveling from one farm to another.
Is drinking dairy milk a concern?
As long as you are consuming pasteurized milk products, there are no concerns for infections in humans. Pasteurization is very effective at killing any H5N1 virus that ends up in milk.
People should avoid raw or unpasteurized milk, as H5N1 virus has been found at very high levels in raw milk.
Jenna Guthmiller, Assistant Professor of Immunology and Microbiology, University of Colorado Anschutz Medical Campus
This article is republished from The Conversation under a Creative Commons license. Read the original article.
The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/
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In the bustling world of professional pickleball, the spotlight often shines on major organizations like the Professional Pickleball Association (PPA), Major League Pickleball (MLP), and the Association of Pickleball Professionals (APP). While these entities focus largely on showcasing young, vibrant talent, there’s a wealth of wisdom to be drawn from the more understated realms of the National Pickleball League (NPL) and the Senior Pro Tour, where seasoned athletes continue to impress.
Longevity in the Sport
Senior pro players offer invaluable insights into maintaining a lasting athletic career. Their expertise in injury prevention, recovery, and adaptive play provide a blueprint for career longevity that younger pros can emulate.
- Training and Conditioning: Senior pros have honed methods to maintain agility and endurance, lessons that can enhance training regimes for younger athletes.
- Injury Management: With a focus on alternative fitness and healing practices like yoga and nutrition, senior players offer models for managing stress injuries effectively.
Focus on Community and Inclusivity
The NPL and Senior Pro Tour are bastions of community spirit and inclusivity, setting a standard that mainstream organizations could embrace.
- Amateur Involvement: By integrating a strong sense of community involvement into competitions, they make the sport accessible to various age groups and skill levels, enhancing the spirit of events hosted by PPA and APP.
- Multigenerational Appeal: Highlighting pickleball’s charm across demographics, senior tours set a precedent for inclusive and family-friendly events.
Mentorship and Knowledge Transfer
Senior pros excel in mentorship, sharing not just technical skills but also mental fortitude.
- Formal Mentorship Programs: Establishing mentoring relationships can foster well-rounded players through strategic advice and supportive, intergenerational learning.
- Player Development: Insights into resilience and adaptability from seniors can aid younger pros in navigating high-pressure scenarios.
Marketing and Brand Longevity
By focusing on forming enduring relationships with brands and sponsors, senior tours illustrate a path for sustainable partnerships.
- Broadening Sponsorship Opportunities: Targeting brands that appeal across generations opens new revenue channels, with wellness-focused brands being a natural fit.
- Sustained Engagement: Marketing pickleball as a lifelong sport invites a wider audience and participant base.
Balanced Scheduling and Player Well-being
The senior circuits often factor player wellness into event scheduling, a practice that pro tours could emulate to avoid player burnout.
- Player-Centric Schedules: Adopting flexible schedules could enhance performance levels by ensuring athletes receive adequate rest.
- Rest and Recovery Focus: Encouraging recovery periods and prioritizing mental health support helps maintain peak conditions for competition.
By drawing lessons from senior pro players and their organizations, professional pickleball can cultivate a more enduring, inclusive, and community-focused environment while ensuring the long-term success of its athletes.
Want more Pickleball News and Information?
Get the latest updates and information on the rapidly growing sport of pickleball, specifically designed for the senior community aged 50+. Check out Sleeve’s Senior Pickleball Report on YouTube to stay informed and up-to-date with the ever-changing world of pickleball. Join the community and stay ahead of the game. https://stmdailynews.com/sleeves-senior-pickleball-report/
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Economy
Dockworkers pause strike after Biden administration’s appeal to patriotism hits the mark
Dockworkers at East Coast ports halted a strike following government intervention, accepting a 62% wage increase, easing supply chain disruptions.
A dockworkers strike that froze operations at East Coast and Gulf Coast ports for 2½ days was paused on Oct. 3, 2024. The Conversation U.S. asked Anna Nagurney, a scholar of supply chains, to assess the extent of disruptions that likely occurred and how the swift return of 45,000 workers who had been on strike may stave off further problems down the road.
Why was the strike suspended?
Aided by intense pressure from senior Biden administration officials, the shipping companies, represented by the U.S. Maritime Alliance, significantly increased the raise they were offering the dockworkers to 62% from their previous offer of a 50% boost in pay. The International Longshoremen’s Association, the dockworkers’ union, was seeking a 77% raise, but it accepted the new offer, which will be phased in over six years.
The agreement labor leaders and management reached will suspend the strike until at least Jan. 15, 2025, allowing more time for additional collective bargaining and negotiations.
Talks over other contested conditions, including the adoption of more automation, will continue until then.
President Joe Biden applauded both sides. He thanked the union and management “for acting patriotically to reopen our ports and ensure the availability of critical supplies for Hurricane Helene recovery and rebuilding.”
How has this strike affected the economy?
About half of the products that the U.S. imports are handled by the ports that were paralyzed during this brief strike. About 1 million shipping containers arrive at these ports every month.
Imports include vast quantities of bananas and other fresh produce, coffee, pharmaceuticals, liquor, toys, apparel, furniture, machinery and vehicles. Exports include meats, commodities, machinery, chemicals, vehicles and vehicle parts.
The strike’s impact was immediate. More than 50 ships laden with hundreds of thousands of containers created a logjam at East Coast ports. Major retailers, such as Walmart, Costco, Lowes and Home Depot, were among the companies stuck waiting for the release of their stranded cargo.
It may take two to three weeks to relieve this logjam. Prices for some products, including coffee, were already rising before the negotiators reached their breakthrough.
Workers are critical to the functioning of each link in supply chains. When the dockworkers were on strike, other workers, such as truckers, rail employees and warehouse workers, were concerned about being affected, as well as all the businesses that rely on them, such as restaurants.
Why is the new time frame significant?
Shipping tied to the holiday season typically runs from July through early November. Members of the National Retail Federation, the largest U.S. retail trade group, have already been dealing with significant supply disruptions due to Houthi attacks in the Red Sea and Suez Canal. The attacks have forced shipping companies to take longer routes, delaying cargo delivery and increasing costs due to the need for more fuel and labor.
A prolonged dockworkers strike would put stress on the economy. According to J.P. Morgan, a lengthy dockworkers strike could have cost the U.S. economy US$5 billion per day.
The temporary agreement pushes the strike past the U.S. elections in November and the conclusion of the upcoming holiday season. That gives both sides a chance to return to the bargaining table to continue to negotiate and to reach an agreement on the issues that haven’t been resolved yet – notably the use of automation.
Having a shorter strike will reduce the risk of shortages of everything from mangos to Maseratis and the price increases that typically occur when products are scarce and in high demand.
What did the Biden administration do?
The Biden administration was eager for a settlement, especially with the ports serving as channels for recovery supplies after the massive damage seen in Florida, western North Carolina and other areas near the East Coast from Hurricane Helene.
Senior government officials made notable progress when they met with representatives of shipping companies before daybreak on Oct. 3 over Zoom.
Julie Su, the acting labor secretary, had been working hard to help the two sides settle their differences. She emphasized over Zoom that she could get the International Longshoremen’s Association to the bargaining table to extend the contract. Transportation Secretary Pete Buttigieg also stayed in touch with labor and management, and used that Zoom meeting to tell the shipping companies that they would need to offer the dockworkers a higher wage.
White House Chief of Staff Jeff Zients told the shipping companies on Zoom that they should make an offer to the union quickly so that the strike wouldn’t further exacerbate the effects of Hurricane Helene.
It seems clear to me that the pressure worked – helped, perhaps, by a bit of patriotism.
Anna Nagurney, Eugene M. Isenberg Chair in Integrative Studies, UMass Amherst
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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As the leaves change and the air turns crisp, October arrives as a powerful reminder of resilience and awareness. Breast Cancer Awareness Month is not just about raising awareness; it’s about action, education, and community support. With over 360,000 people projected to be diagnosed with breast cancer in the U.S. in 2024, this month serves as a crucial time to reflect on the impact of this disease and the importance of early detection.
The Statistics Behind the Cause
Breast cancer affects approximately 1 in 8 women and 1 in 1,000 men in the United States. This staggering statistic highlights the urgency to be proactive. However, there is hope. Thanks to advancements in medical technology and research, early detection methods have improved significantly. When breast cancer is caught in its earliest, localized stages, the 5-year relative survival rate is an impressive 99%. This underscores the importance of regular screenings, self-examinations, and awareness campaigns like those organized during Breast Cancer Awareness Month.
Metastatic Breast Cancer Awareness Day
Among the many important dates in October, October 13 stands out as Metastatic Breast Cancer Awareness Day. This day is dedicated to raising awareness about the realities of metastatic breast cancer (MBC), which occurs when breast cancer spreads beyond the breast to other parts of the body. It is crucial to recognize that while advancements have been made, MBC remains a significant challenge within the breast cancer community. This day serves as a reminder that we must advocate for more research, better treatments, and comprehensive support for those living with this stage of breast cancer.
The Role of the National Breast Cancer Foundation
The National Breast Cancer Foundation Inc. (NBCF) plays a vital role in this month-long awareness initiative. Their mission, “Helping Women Now®,” focuses on providing education, support, and resources to women and families affected by breast cancer. With a commitment to early detection, NBCF encourages individuals to act, reminding us that being proactive can save lives. Whether through scheduling mammograms, performing self-exams, or simply spreading awareness, every action counts.
The Importance of Community Support
Breast cancer is not just a statistic; it affects real lives, families, and communities. Throughout October, communities come together to support those impacted by breast cancer. From fundraising events to educational seminars, the collective efforts aim to foster a sense of camaraderie and hope. It’s a time to remind those suffering that they are not alone in their journey.
Participating in Breast Cancer Awareness Month can take many forms, whether it’s wearing pink, sharing stories on social media, or advocating for breast cancer research. Each act of kindness and awareness helps to amplify the message and promote a culture of support and understanding.
Taking Action
As we move through October, let us not forget the importance of taking action. Schedule a mammogram, perform a self-exam, and encourage friends and family to do the same. Educate yourself about the signs of breast cancer and stay informed about the latest advancements in treatment and support.
October is a month of awareness, hope, and action. By shining a light on breast cancer and recognizing specific awareness days like Metastatic Breast Cancer Awareness Day, we can foster a community that supports those affected and works towards a future where breast cancer no longer holds the same fear it does today. Let’s come together to make a difference—because every action counts in the fight against breast cancer.
For more information about Breast Cancer Awareness Month and how you can get involved, visit the National Breast Cancer Foundation’s website at NBCF. Together, we can help raise awareness and support those in need.
Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.
https://www.nationalbreastcancer.org/breast-cancer-awareness-month/
https://www.komen.org/about-komen/our-impact/breast-cancer/breast-cancer-awareness-month/
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