Prevalence and Co-Detection Rates of SARS-CoV-2, Influenza, and Respiratory Syncytial Virus: A Retrospective Analysis.

In late 2022, there was a significant increase in the prevalence of RSV in the northeastern United States. This surge occurred concurrently with the beginning of the traditional influenza season and the ongoing circulation of SARS-CoV-2. We retrospectively analyzed respiratory testing data at a regional reference laboratory from September 2022 to April 2024 to characterize the prevalence and incidence of co-detection of RSV, influenza A, influenza B, and SARS-CoV-2 in the northeastern United States.