With increasing time since diagnosis, only the severe infections continued to cause symptoms.
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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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.
Flu was tied to 7,851 deaths from week 33, 2022, to week 12, 2023, compared with 32,607 deaths tied to COVID-19.
Southeast Asia's flu levels remained elevated, including in Cambodia, Myanmar, and the Philippines.
