Arizona Cattle and Milk Test Positive for H5N1 Avian Flu: A Surprising Discovery

The Arizona Department of Agriculture (AZDA) confirmed on Friday that avian flu has been detected in milk from a dairy herd located in Maricopa County. This incident has led to the quarantine of the affected dairy farm.

Arizona joins approximately a dozen states monitoring confirmed cases of avian flu. Federal, state, and local health officials affirm that the risk to the public remains low, as there is no evidence of human-to-human virus transmission in Arizona or elsewhere.

Despite the presence of the virus, cattle from the quarantined herd are not exhibiting symptoms. Officials noted that while the chance of the virus passing from birds or cattle to humans is low, those who work closely with these animals may be at higher risk. A recent federal study highlighted previously underreported avian flu cases among veterinarians.

In addition to the dairy farm incident, five animals at the World Wildlife Zoo and Aquarium in Litchfield Park have died due to exposure to the virus. Other reported cases include geese at a Scottsdale park and two poultry workers in Pinal County who contracted the virus but have since recovered.

Authorities are urging the public to avoid consuming raw milk, where the virus has been identified. Public health warnings surrounding raw milk have intensified, particularly as some conservative groups promote misconceptions regarding its health benefits.

The detection of the virus in milk stems from ongoing testing that has been in place since January. AZDA has confirmed that every dairy farm in the state has undergone testing at least once this year.

Backyard flocks remain especially vulnerable to the virus, with both domestic and wild animals at risk. Symptoms to monitor for include lethargy, loss of appetite, and unusual physical signs in birds. Pet owners should also observe their animals closely, watching for signs such as a fever or respiratory issues.

In humans, the virus can lead to a range of symptoms, from mild respiratory issues to severe cases resulting in multi-organ failure. The current strain, known as Eurasian H5N1, has been particularly deadly for various wild bird species. Over 150 wild birds have tested positive for the virus in Arizona, according to the Centers for Disease Control and Prevention.

If members of the public encounter sick wild birds, they are urged to contact the Arizona Game and Fish Department at 623-236-7201. For sick domestic birds, the AZDA can be reached at 602-542-4293.