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Other Respiratory Viruses

View Previous Years

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.

Activity Summary – Week 26

For week 26 of 2025, rhinovirus/enterovirus activity decreased but remained high compared to other respiratory viruses. Parainfluenza virus 3 activity increased and remained high. Human metapneumovirus activity has decreased each of the past two weeks, with levels similar to this time last season. RSV, adenovirus, and parainfluenza virus 1 and 2 activities have all remained low over the past several weeks.

Laboratory-Based Surveillance for RSV

Laboratory-Based Surveillance for Rhinovirus/Enterovirus

Laboratory-Based Surveillance for Respiratory Adenovirus

Laboratory-Based Surveillance for Human Metapneumovirus

Laboratory-Based Surveillance for Parainfluenza