THIS WEEK,
ARGENTINA and Uruguay declared national health emergenciesfollowing outbreaks of highly pathogenic avian influenza H5N1, the fast-moving virus that destroys poultry flocks and wild birds, and for decades has been feared as a possible spark for a pandemic among people. That makes 10 South American countries that have recently marked their first-ever encounter with the virus, including Peru—where more than 50,000 wild birds died last fall, and more than 600 sea lions in January. Combine the sea lion infections with the revelation that H5N1 flu invaded a mink farm in Spain in October, and health authorities must now confront the possibility that the unpredictable virus may have adapted to threaten other species.
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- March 2023 (1)
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