The US Centers for Disease Control and Prevention has also confirmed one human case of H5N1 in a farm worker, which could either represent cow-to-human (not seen before) or bird-to-human transmission.
Given how infectious H5N1 is and the fact cows are asymptomatic or have mild symptoms, it's likely that the spread is much farther across the country.
US Food and Drug Administration found traces of the virus in roughly one in five commercially bought milk samples through PCR testing, which detects both live and dead virus fragments.
#avian-flu-h5n1 #transmission-to-humans #infectiousness #public-health-precaution #us-food-and-drug-administration
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