U.S. respiratory virus infections continue to build following the winter holidays.

After winter holidays, respiratory virus activity continues to build across the US | CNN The first look at trends following most of the winter holidays shows that seasonal virus activity remains elevated and continues to rise across the United States, according to data from the US Centers for Disease Control and Prevention. As infections and hospitalizations mount, the CDC continues to emphasize the importance of vaccination — and the value of treatment to avoid severe disease. Deidre McPhillips CNN

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Overall, flu-like activity is high or very high in all but a dozen states. Multiple indicators, including test positivity, emergency department visits and hospitalizations, are elevated for respiratory viruses including Covid-19, flu and RSV.