Across the United States, cases of respiratory syncytial virus, or RSV, and influenza are increasing. Influenza activity continues to increase in the US – the number of flu illnesses, hospitalizations and deaths so far this season nearly doubled in the past week. RSV cases are also increasing nationally, although there are regional differences in the circulation of these viruses, Romero said. In the South and Mountain West, RSV cases appear to have peaked in October. There are signs that RSV cases are slowing in the southern region of the US, but test positivity rates and cases continue to rise in other regions, especially the Midwest.

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