Other Respiratory Viruses
View Previous YearsThe 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 22
For week 22 of 2025, rhinovirus/enterovirus activity increased but remained below peak activity seen at the start of the season. Human metapneumovirus activity increased during week 22, with 5.1% (28/554) of specimens testing positive. Parainfluenza virus 3 activity decreased slightly during week 22 and remained low compared to this time last season. Activity for RSV, adenovirus, and parainfluenza virus 1 and 2 remained low with levels similar to previous weeks.
