Bird flu detected in Arizona milk; how worried should you be?
Avian influenza has been detected in milk from a dairy herd in Maricopa County for the first time since the latest outbreak, according to the Arizona Department of Agriculture.
Bird flu is a highly pathogenic viral infection that mainly affects birds but can sometimes be transmitted to humans.
Bird flu spreads through contact with the virus, such as inhaling droplets from infected saliva. It can also be transmitted through blood, feces, and other bodily fluids from an infected animal. People who work closely with birds or domestic animals are at the highest risk of contracting the virus.
In addition to humans, the virus can infect various mammals, including cows, cats and dogs.
Human cases of bird flu are almost always contracted from contact with infected animals; it's considered incredibly rare for human to human transmission to occur.
What to know: Bird flu is reaching Arizona
The risk to the general public remains very low, but it's important to stay updated on the news as federal and local agencies nationwide are closely monitoring the situation.
On Feb. 11, the department confirmed the presence of the H5N1 D1.1 strain of avian influenza in a single herd. The facility is now under quarantine. Unlike other cases reported in neighboring states like Nevada, the cattle affected by the D1.1 strain have not shown any signs of illness so far.
Since January, every dairy herd in Arizona has undergone at least one test under the National Milk Testing Strategy, which launched that month with a focus on bulk testing. The U.S. Department of Agriculture developed this strategy late last year in response to the heightened risk of bird flu contaminating consumer milk.
The Arizona Department of Agriculture emphasized that the D1.1 genotype 'bears no features that would make it more likely to infect humans.' As a precaution, some cattle in Maricopa County will be isolated from the main herd linked to the contaminated milk.
Only a sample from this herd has so far tested positive for bird flu, out of all in Arizona. The risk to the general public remains low although individuals in close contact with dairy cattle may now be at increased risk, the department said.
Concerns over trade wars: Kelly warns about Trump tariffs after tour of Arizona dairy facility
This article originally appeared on Arizona Republic: Bird flu detected in Arizona milk; how worried should you be?
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