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The following graphs depict the aggregate results of PDPH's respiratory virus surveillance. Care should be taken with the interpretation of these results. These summaries display the provisional, year-to-date counts (or, in some cases, percentage positivity) of respiratory viruses by week of report. Comparable data for preceding years are shown as well. All surveillance data are preliminary and are not intended for further distribution.
For week 53 of 2025, rhinovirus/enterovirus detections remained higher than other respiratory viruses. RSV activity increased again during week 53, with 261 positive specimens reported and a percent positive of 6.2%. Adenovirus, parainfluenza 1, and human metapneumovirus were also identified during week 53.