Tuesday, July 9, 2024

Features of H5N1 Influenza Viruses in Dairy Cows May Facilitate Infection, Transmission in Mammals

NIH/NIAID Template Banner

Avian Influenza A Virus (H5N1/Bird Flu)

Colorized transmission electron micrograph of avian influenza A H5N1 virus particles (red/yellow) grown in Madin-Darby Canine Kidney (MDCK) epithelial cells. Microscopy by CDC; repositioned and recolored by NIAID. Credit: CDC and NIAID

A series of experiments with highly pathogenic H5N1 avian influenza (HPAI H5N1) viruses circulating in infected U.S. dairy cattle found that viruses derived from lactating dairy cattle induced severe disease in mice and ferrets when administered via intranasal inoculation. The virus from the H5N1-infected cows bound to both avian (bird) and human-type cellular receptors, but, importantly, did not transmit efficiently among ferrets exposed via respiratory droplets. The findings, published in Nature, suggest that bovine (cow) HPAI H5N1 viruses may differ from previous HPAI H5N1 viruses and that these viruses may possess features that could facilitate infection and transmission among mammals. However, they currently do not appear capable of efficient respiratory transmission between animals or people.

Learn More: https://www.niaid.nih.gov/news-events/features-h5n1-influenza-viruses-dairy-cows-may-facilitate-infection-transmission  


This email was sent to edwardlorilla1986.paxforex@blogger.com using GovDelivery Communications Cloud on behalf of: National Institute of Allergy and Infectious Diseases · 5601 Fishers Lane · Bethesda, MD 20892 · 1-866-284-4107 GovDelivery logo

No comments:

Post a Comment

You ➕ this quiz 🟰 A certified genius

        Happy Friday! I think by now you've gathered that Fridays are for trivia, right? Of course you did because you're smart...