Tuesday, June 3, 2025
Your Health 247
Advertisement
  • Home
  • Health
  • Fitness
  • Diseases
  • Nutrition
  • Weight Loss
  • Meditation
  • Wellbeing Tips
  • Suppliments
  • Yoga
No Result
View All Result
  • Home
  • Health
  • Fitness
  • Diseases
  • Nutrition
  • Weight Loss
  • Meditation
  • Wellbeing Tips
  • Suppliments
  • Yoga
No Result
View All Result
Your Health 247
No Result
View All Result
Home Diseases

H5N1 dairy cow study finds sustained milk production drop, extensive transmission across herd

Your Health 247 by Your Health 247
March 13, 2025
in Diseases
0 0
0
H5N1 dairy cow study finds sustained milk production drop, extensive transmission across herd
0
SHARES
29
VIEWS
Share on FacebookShare on Twitter


Scientists who examined the impact of an H5N1 avian flu outbreak in an Ohio dairy herd that had about 3,900 cows found a milk production drop in clinically affected cows that lasted 60 days and extensive asymptomatic infections in other cows. The team, led by researchers at Cornell University, published their findings as a preprint study in Nature Portfolio.

The first illness in the herd was noted about 2 weeks after apparently healthy lactating cows from Texas were introduced into the herd. Decreased rumination and a decline in milk production appeared to decline about 5 days before clinical diagnosis.

Significant production consequences

The researchers observed clinical disease in about 20% of cows, with milk losses of about 900 kg per cow in the 60-day period that followed the outbreak. They estimated the economic loss at $950 per clinically affected cow. Combined with mortality and herd removal, the team estimated the total cost of the outbreak in the herd as $737,500 over the observation period.

Higher risks were seen in multiparous cows when compared with those that were lactating for the first time, an observation that has been seen before, which the group said may suggest a link between cumulative exposure to the milking process and the risk of clinical disease.

Seroprevalance findings were positive for nearly 90% of the 637 animals that were on the farm during the clinical phase of the outbreak, suggesting high transmission efficacy. Notably, antibodies were seen in 17 of 42 cows that were in the dry phase, hinting that nonlactating cows can also be the source of the virus.

“Although the precise mechanism of transmission of HPAI H5N1 virus in dairy cattle remains unknown, this is consistent with infections with other influenza A viruses which can quickly spread through susceptible mammalian populations including in humans, dogs and swine,” they wrote.

More confirmations in US dairy cows, mammals, and poultry

In outbreak developments, the US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) confirmed two more H5N1 in dairy cattle, both from Idaho, raising the national total to 985. Idaho has now reported three detections over the past few weeks.

The Idaho State Department of Agriculture said three facilities are currently quarantined, all from Gooding County.

Also, APHIS reported nine more detections in mammals, including domestic cats from New Jersey, Idaho, and Kansas. Officials also confirmed H5N1 in a harbor seal from Washington and mice from Missouri’s Newton County.

In poultry developments, APHIS confirmed more detections in backyard poultry from five states, including Iowa, Nebraska, New York, Colorado, and Indiana, along with detections in two more live poultry markets in New York, one in Queens and the other in Kings County.



Source link

Tags: cowdairyDropextensivefindsH5N1herdmilkproductionStudysustainedtransmission
Previous Post

Sudden withdrawal of CDC nominee

Next Post

Scientists reveal how Epstein-Barr virus reactivation triggers MIS-C in children

Next Post
Scientists reveal how Epstein-Barr virus reactivation triggers MIS-C in children

Scientists reveal how Epstein-Barr virus reactivation triggers MIS-C in children

Facebook Twitter Instagram Youtube RSS
Your Health 247

Discover the latest in health and fitness with Your Health 247. Get expert advice, workout routines, healthy recipes, and mental wellness tips to lead a healthier, happier life. Stay informed and empowered with us!

CATEGORIES

  • Diseases
  • Fitness
  • Health
  • Meditation
  • Nutrition
  • Suppliments
  • Weight Loss
  • Wellbeing Tips
  • Yoga
No Result
View All Result

SITEMAP

  • About Us
  • Advertise with Us
  • Disclaimer
  • Privacy Policy
  • DMCA
  • Cookie Privacy Policy
  • Terms and Conditions
  • Contact us

Copyright © 2025 Your Health 24 7.
Your Health 24 7 is not responsible for the content of external sites.

No Result
View All Result
  • Home
  • Health
  • Fitness
  • Diseases
  • Nutrition
  • Weight Loss
  • Meditation
  • Wellbeing Tips
  • Suppliments
  • Yoga

Copyright © 2025 Your Health 24 7.
Your Health 24 7 is not responsible for the content of external sites.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In