Related Experiment Video
Updated: May 28, 2025

Influenza Virus Propagation in Embryonated Chicken Eggs
Published on: March 19, 2015
mGem: Transmission and exposure risks of dairy cow H5N1 influenza virus
A J Campbell1, Kayla Brizuela1, Seema S Lakdawala1
1Department of Microbiology and Immunology, Emory University, Atlanta, Georgia, USA.
Abstract:
In March 2024, highly pathogenic H5N1 was detected in dairy cows; as of 12 December 2024, it had spread to over 800 herds in 16 states. The ongoing outbreak is a public health crisis affecting both humans and animals, as interspecies transmission has emerged as a common characteristic of this virus. As of 12 December 2024, >30 humans have been infected in the United States related to dairy cow exposure. In this mGem, we discuss transmission modalities between cows within herds, the spread of the virus between dairy farms, and exposure risks for humans. We also highlight major gaps in knowledge constituting barriers to our ability to effectively control the spread of H5N1 in dairy cows and reduce the risks to humans.
More Related Videos
Related Concept Videos
Viral Mutations
Viral Recombination
Transmission-based Precautions II: Airborne and Protective Environment
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Vaccinations
Infection
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...

