Domestic cats living within a short distance of active H5N1 avian influenza outbreaks on California dairy farms face a dramatically heightened vulnerability to infection, with antibody tests revealing that one out of every four nearby felines carries the virus, based on research released by investigators at the University of Maryland School of Public Health and … Read more
Human infections with highly pathogenic avian influenza A(H5N1) remain rare and mild among exposed poultry workers, according to a cohort study published in the journal Eurosurveillance. Researchers investigating outbreak sites in England between April 2023 and March 2025 found that fewer than 1% of monitored individuals met criteria for infection, even as rising animal spillover … Read more
New Zealand has confirmed its first cases of H5N1 bird flu in wild birds, following the detection of the virus in a brown skua near Wellington and a swamp harrier (kahu) in the Wairarapa region. Biosecurity Minister Andrew Hoggard confirmed that while the virus has reached native species, no cases have been detected in poultry, … Read more
The Department of Agriculture, Fisheries and Forestry (DAFF) has confirmed a second case of H5 bird flu in New South Wales after a giant petrel tested positive on the Mid North Coast. This detection at Bennetts Beach in Hawks Nest marks the 15th confirmed or presumed positive case of the virus in Australia, according to … Read more
Australian agricultural authorities are expanding surveillance and diagnostic testing for H5N1 avian influenza following the detection of the virus in wild seabirds across South Australia and Western Australia. Agriculture Minister Julie Collins stated that poultry products remain safe for consumption and pose no risk to human health, even as international trade partners like Papua New … Read more
Australia has confirmed its first-ever case of the highly infectious H5 avian influenza, detected in a brown skua found on a beach near Esperance, Western Australia. Local veterinarian Dr. Toni Howlett discovered the sick bird while walking, later followed by a second confirmed case in a Giant Northern Petrel identified by Dr. Alex Hockton. Both … Read more
Australia is facing a potential ecological crisis as the highly pathogenic H5N1 clade 2.3.4.4b bird flu virus reaches its shores, with experts warning that a transition into freshwater environments could devastate native wildlife. While confirmed cases remain limited to migratory seabirds near Esperance, Western Australia, the virus has already caused mass mortality in elephant seals … Read more
Researchers at the University of Pittsburgh School of Public Health have identified that H5N1 bird flu infects dairy cattle primarily through specific N-linked sialic acid receptors found in mammary glands, rather than the respiratory tract. This discovery explains why the virus causes severe mastitis in cows instead of traditional respiratory symptoms, providing a new framework … Read more
The H5N1 Paradox: Why Lab Results Aren’t Telling the Full Story A recent groundbreaking study published in Nature Communications has sent shockwaves through the veterinary and public health communities. The research reveals a startling biological paradox: while H5N1 (highly pathogenic avian influenza) can overwhelm a dairy cow’s mammary tissue with an incredibly small viral dose, … Read more
Beyond the Milk Pail: The New Frontier of H5N1 Transmission For years, the conversation around avian influenza (H5N1) focused primarily on poultry and the occasional jump to humans. But a paradigm shift is occurring in the dairy industry. Recent findings from California dairy farms have revealed a sobering reality: the virus isn’t just in the … Read more