Key warning signs about bird flu are all going in the wrong direction This year has been marked by concerning developments in the virus’ spread, including widespread detections in wastewater and mutations observed in the virus. NBC News

...No bird flu transmission between humans has been documented, and the CDC maintains that the immediate risk to public health is low. But scientists are increasingly worried, based on four key signals.

What states have the highest COVID rates? Map shows where it's spreading as winter approaches Is COVID going around again as the U.S. approaches the winter? Infectious disease experts share what to know and how to stay safe. TODAY

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According to viral activity in wastewater — one of the most accurate ways to measure cases since the CDC stopped tracking overall cases, — the states with the highest COVID rates, as of Nov. 30, are:

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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