The proportion admitted to the ICU ranged from 14% during 2021-22 to 22% during 2013-14.
The loss of activity is equivalent to 15% of the US population becoming completely immobile for 1 day.
Adult COVID-19 patients also infected with the flu are 4 times more likely to need mechanical ventilation and 2.4 times more likely to die.
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In influenza news, US flu cases appear to be rising, and officials have confirmed more avian flu outbreaks in US poultry.
Many public health preparedness directors had to tap into state or national antiviral stockpiles.
Test positivity is still very low, and most subtyped samples are the H1N1 influenza A virus.
A few counties are reporting high levels of hospitalizations, especially in the Upper Midwest and West.
The weekly proportion of outpatient visits for influenza-like illness, flu hospitalizations, and flu deaths all peaked between the 90th and 98th percentile.
The first phase of work focuses on an antibody that broadly protects against circulating SARS-CoV-2 variants.
Patients infected with A(H1N1)pdm09 were 42% more likely to be admitted to an ICU, 79% more likely to need mechanical ventilation or ECMO, and 25% more likely to die.
Early sharp rises in some South American countries put pressure on healthcare systems.
Wastewater testing rose in prominence during the COVID-19 pandemic.
Flu remained at low levels overall, but with elevated activity in some parts of Asia and Central America.