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 18
For week 18 of 2025, rhinovirus/enterovirus activity remained high but was lower than peak activity seen at the start of the season. Human metapneumovirus activity decreased during week 18, with 7.4% (43/578) of specimens testing positive. Parainfluenza virus 3 activity remained low compared to this time during previous seasons and decreased during week 18. RSV, adenovirus, and parainfluenza virus 1 and 2 activities remained low with levels similar to previous weeks.
