Thu Sep 19 08:53:10 UTC 2024: ## Avian Flu Spreads to Dairy Cows, Raising Pandemic Fears

**US farms are facing a potential avian flu crisis as the virus has spread to dairy cows, raising concerns about a pandemic in mammals, including humans.**

The H5N1 strain of bird flu, responsible for the deaths of millions of birds and thousands of mammals globally, has been found in dairy cattle since March. Virologists are worried that the virus could become established in cattle, potentially leading to a constant threat to humans and other animals.

**Key concerns include:**

* **Virus transmission:** The virus has been found to spread through shared milking machinery and potentially through infected milk. This raises concerns about the contamination of farms and the possibility of human exposure.
* **Spread to wild birds and poultry:** The virus has already been found to spread back from cattle to wild birds and poultry, increasing the risk of widespread outbreaks in these populations.
* **Evolutionary risk:** The virus could evolve in cattle, potentially becoming more transmissible to humans or more deadly.

**Despite the seriousness of the situation, virologists are concerned about the lack of action and data:**

* **Limited testing:** The true scale of the outbreak in cattle is unknown due to inadequate testing in many states.
* **Incomplete human data:** Official reports only show 14 human cases since April 2024, but experts believe the actual number is much higher due to limited testing and mild symptoms.

**The spread of avian flu to dairy cows marks a concerning new chapter in the fight against this deadly virus.** Scientists are urging for increased testing and monitoring to understand the full extent of the problem and prevent a potential pandemic.

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