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In severe bird flu cases, the virus can mutate as it lingers in the body

NBC News
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83% Informative

A 13-year-old girl in British Columbia was hospitalized with bird flu for several weeks last year .

She was Canada ’s first recorded human infection of avian influenza , which has infected at least 66 people in the United States since March .

Nearly all of the cases of bird flu in North America have been mild.

The girl, who had mild asthma and obesity, went to the hospital Nov. 4 for conjunctivitis and a fever, but was sent home without treatment.

She continued to get sick, and soon came down with a cough, vomiting and diarrhea.

She was transferred to the pediatric intensive care unit for respiratory failure, pneumonia, kidney injury.

Tests revealed the virus, even with its mutations, was not resistant to available antivirals.