• Bird Flu Outbreak Location: Multiple states in the USA, including Nevada, Ohio, Missouri, California, and Maryland. • Affected Species: Dairy cattle, turkeys, and broiler chickens.
• Public Health Risk: No risk to food supply or human consumption of pasteurized milk and dairy products.
• Avian Flu Outbreak: H5N1 avian flu detected in Nevada dairy herds and US poultry flocks.
• Targeted Removal Efforts: Nevada officials implementing targeted starling removal to prevent further spread.
• Surveillance and Testing: USDA investigators conducting surveillance and testing wildlife to identify virus strains and transmission routes.
• Starling Removal Reason: Large starling populations in Churchill, Pershing, and Lyon counties are a nuisance, spreading disease and contaminating food and water sources.
• Starling Impact: European starlings are aggressive, outcompete native birds for nesting sites, and can spread diseases to livestock.
• H5N1 Virus Spread: The H5N1 virus can spread through contaminated clothing and equipment, infected birds, and contact with domestic animals and livestock.
• Bird Flu Outbreaks: Outbreaks reported in Maryland, Virginia, Florida, California, Nebraska, Iowa, and North Dakota.
• UK Human Case: Mild respiratory symptoms and irritated eyes in a patient with prolonged contact with infected poultry; virus belongs to the DI.2 genotype.
• Genetic Analysis: The virus’s hemagglutinin (HA) segment is similar to a strain from a UK chicken, while the polymerase basic protein 2 (PB2) gene has the I292V mutation.
• Avian Flu Outbreak: Highly pathogenic avian influenza (HPAI) continues to spread in the U.S. Midwest, with recent cases in Ohio and Missouri.
• Ohio Cases: 10 commercial poultry flocks in Ohio were confirmed with HPAI, including meat turkeys and laying hens.
• Missouri Cases: 3 more commercial poultry flocks in Missouri were confirmed with HPAI.
• Ohio HPAI Outbreak: Ohio has had the most commercial flocks affected by HPAI in 2025, with 39 flocks lost so far.
• Missouri HPAI Outbreak: Four more commercial poultry flocks in Missouri were confirmed to have HPAI, bringing the total to 14 flocks lost in 2025.
• Indiana HPAI Outbreak Update: The number of birds affected by HPAI in a commercial layer operation in Jackson County, Indiana, was updated from 586,100 to 2,633,900.
• HPAI Confirmation in Canada: HPAI confirmed in a commercial poultry flock in County Municipality, Quebec on January 30, 2025.
• HPAI Confirmation in California: HPAI confirmed in a commercial meat turkey flock in San Joaquin County, California on February 3, 2025, affecting 22,200 turkeys.
• Previous HPAI Outbreak in Canada: This is the first reported case of HPAI in commercial poultry in Canada since January 11, 2025.
• Avian Flu Cases in California: California has the highest number of avian flu cases in the US, with 59 cases, three of which were in San Joaquin County.
• Avian Flu in Iowa: HPAI was detected in a commercial layer flock in O’Brien County, Iowa on February 2, 2025, marking the return of the virus to the state after a previous outbreak in December 2024.
• Avian Flu in Maryland: A commercial broiler flock in Worcester County, Maryland, tested positive for HPAI on February 4, 2025, leading to the quarantine and depopulation of the affected premises.
• HPAI Outbreak Location: This is the first confirmed case of HPAI in Worcester County, Maryland, during the 2022-25 outbreak.
• HPAI Outbreak Impact: This is the fifth commercial poultry flock in Maryland to be struck by HPAI in 2025, all involving commercial broiler operations.
• HPAI Prevention Measures: Biosecurity measures like clothing and truck wash, limiting wild bird access, and personal protection are crucial. • Disease Outbreak: Avian influenza (H5N1) in cattle.
• Location: Nevada, USA.
• Related Information: Previous outbreaks of avian influenza in various states and species in the USA. http://promedmail.org/post/20241221.8720808
• Geographic Distribution: Reports of avian influenza cases in Canada and the USA. • Species Affected: Birds, cattle, poultry, and dairy cattle. • Virus Strain: HPAI H5N1 in some cases.
• Avian Influenza Outbreak Locations: USA, Canada, Antarctica.
• Affected Species: Dairy cows, poultry, layers, turkeys, alpacas, cats, other mammals. • Virus Strain: H5N1, HPAI (Highly Pathogenic Avian Influenza).
• Avian Influenza Outbreak: HPAI outbreak in the Americas (USA) affecting various bird species including turkeys, pheasants, game birds, layers, and backyard flocks.
• Wild and Domestic Bird Impact: Outbreak also impacts wild and domestic birds in the Americas.
• Vaccine Dilemma: Challenges and considerations surrounding the use of vaccines in controlling the avian influenza outbreak. • Submission Website: https://promedmail.org/submitinfo/
• Support Contact: https://promedmail.org/support/
• Subscription Management: https://isid.org/promedmail-subscribe/
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