Tag #Dairy Cows

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euronews.com

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Feb 14, 22:08

Asymptomatic Bird Flu Cases in US Veterinarians Highlight Undetected Outbreak Spread

A study revealed three asymptomatic US cow veterinarians with bird flu antibodies, highlighting the undetected spread of H5N1 in dairy cattle (968 herds affected since March 2024) and 68 human cases (one death) in the US. The findings suggest that current monitoring may underestimate infection rates...

Asymptomatic Bird Flu Cases in US Veterinarians Highlight Undetected Outbreak Spread

A study revealed three asymptomatic US cow veterinarians with bird flu antibodies, highlighting the undetected spread of H5N1 in dairy cattle (968 herds affected since March 2024) and 68 human cases (one death) in the US. The findings suggest that current monitoring may underestimate infection rates...

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What are the immediate implications of asymptomatic bird flu infections detected in US veterinarians, and how does this impact current outbreak control strategies?

Three US cow veterinarians tested positive for bird flu antibodies, despite no reported symptoms, suggesting that current monitoring methods underestimate human infections. This highlights the spread of avian influenza (H5N1) to 968 dairy herds in the US since March 2024, with 68 human cases and one death. One veterinarian who tested positive had contact with infected poultry, while another worked in a state without reported cases, indicating potential wider spread.

us.cnn.com

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Feb 6, 04:08

H5N1 D1.1 Strain Detected in Nevada Dairy Herds

Six Nevada dairy herds tested positive for the H5N1 bird flu virus strain D1.1 on January 31st, raising concerns about its spread from birds to cattle and the potential for human infection; this is the second known instance of this happening in the US and represents a significant challenge to contai...

H5N1 D1.1 Strain Detected in Nevada Dairy Herds

Six Nevada dairy herds tested positive for the H5N1 bird flu virus strain D1.1 on January 31st, raising concerns about its spread from birds to cattle and the potential for human infection; this is the second known instance of this happening in the US and represents a significant challenge to contai...

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What are the immediate implications of the H5N1 D1.1 strain's detection in Nevada dairy herds, and how does it impact national efforts to control the virus?

Six Nevada dairy herds tested positive for the H5N1 bird flu virus strain D1.1, previously only detected in birds and humans with bird contact. This is the second documented instance of avian flu in cattle herds, marking a significant challenge in containment efforts, as spread from birds to cows is harder to control than cow-to-cow transmission.

cnn.com

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Feb 6, 04:08

H5N1 D1.1 Strain Detected in Nevada Dairy Herds

Six Nevada dairy herds tested positive for the H5N1 bird flu virus strain D1.1 on January 31, 2025, detected via USDA milk testing; this is the second known instance of avian flu in cattle herds, raising concerns about virus spread and necessitating a shift in containment strategies.

H5N1 D1.1 Strain Detected in Nevada Dairy Herds

Six Nevada dairy herds tested positive for the H5N1 bird flu virus strain D1.1 on January 31, 2025, detected via USDA milk testing; this is the second known instance of avian flu in cattle herds, raising concerns about virus spread and necessitating a shift in containment strategies.

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How did the virus spread to these dairy herds, and what broader context does this provide for understanding the ongoing H5N1 outbreak?

The discovery of D1.1 in Nevada dairy herds connects the recent spread of this strain—initially detected in the Pacific Flyway in August 2024 and now across all four—to a new animal host. This highlights the virus's environmental presence and ability to infect mammals, shifting containment efforts from bird-to-bird transmission to a more complex interspecies scenario. The virus's spread among dairy herds was discovered via USDA milk testing.

nrc.nl

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Dec 12, 01:09

Single Mutation Increases Avian Flu Pandemic Risk

A single genetic mutation allows avian flu from US dairy cows to bind to human airway cells, increasing pandemic risk; 35 Americans infected, but no human-to-human transmission yet.

Single Mutation Increases Avian Flu Pandemic Risk

A single genetic mutation allows avian flu from US dairy cows to bind to human airway cells, increasing pandemic risk; 35 Americans infected, but no human-to-human transmission yet.

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What measures should be implemented to mitigate the risk of a pandemic resulting from this easily mutable avian flu virus?

The findings underscore the urgent need for enhanced surveillance and preparedness. Though human-to-human transmission hasn't been observed yet, this single mutation drastically increases the likelihood of a pandemic. Further mutations could render the virus highly contagious among humans.

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