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

Respiratory virus activity is typical for the time of year compared to recent seasons. However, human metapneumovirus counts, though decreasing, continue to remain higher than previous seasons. Rhinovirus, parainfluenza 3 and human metapneumovirus were the predominant circulating respiratory viruses in week 20. Adenovirus, human metapneumovirus, rhinovirus and parainfluenza 3 counts all decreased. Detections of RSV and parainfluenzas type 1 and 2 remain low.

Laboratory-Based Surveillance Rhinovirus

Laboratory-Based Surveillance Respiratory Adenovirus

Laboratory-Based Surveillance Human Metapneumovirus

Laboratory-Based Surveillance Parainfluenza




Updated: 05/25/2018