Canadian teenager's critical condition with presumptive bird flu raises concern about virus' possible wider impact

Canadian teenager in critical condition with presumptive bird flu as U.S. official warns the virus 'seems to be gearing up for wider impact' Health officials were struggling to answer a broader and potentially worrisome question: how the infection occurred. Carolyn Barber Fortune

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“This case is very concerning for a number of reasons,” says Rick Bright, an American immunologist and vaccine researcher and a U.S. government health official from 2016 to 2020. “It’s in an otherwise healthy teenager. Like a similar case in Missouri, there’s no clear source for infection and no direct farm connection.”

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