Avian flu cases are on the upswing at big dairy farms
Briefly

The Centers for Disease Control and Prevention confirmed that four of the cases in humans had no known connection to livestock, raising fears that the virus eventually could jump from one human to another, though that hasn't happened yet.
Large livestock facilities in states across the country, and especially in California, have become the epicenters of these cases, and some researchers say that's no surprise: Putting thousands, even hundreds of thousands, of animals together in confined, cramped barns or corrals creates a petri dish for viruses to spread.
Read at Ars Technica
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