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The USDA confirmed H5N1 avian flu in a Nebraska dairy herd, the state’s first case. Officials assured milk supply safety, while urging farms to boost biosecurity as investigations continue.

The new version, known as D1.1, was confirmed in Nevada cattle and was linked to the first US death tied to bird flu

SARS-CoV-2, the virus causing Covid-19, was transmitted from humans to deer, mutated, and was potentially transmitted back to humans many times.