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

For week 18 of 2019, respiratory virus activity was typical for the time of year compared to recent seasons. Rhinovirus was the predominant circulating non-influenza respiratory virus, as approximately 20.7% of respiratory specimens tested positive for that week. Parainfluenza type 3 counts continued to rise, as did counts of rhinovirus, adenovirus and parainfluenza type 1. RSV and human metapneumovirus counts changed little, while detections of parainfluenza type 2 remain low.

Laboratory-Based Surveillance Rhinovirus

Laboratory-Based Surveillance Respiratory Adenovirus

Laboratory-Based Surveillance Human Metapneumovirus

Laboratory-Based Surveillance Parainfluenza




Updated: 05/10/2019