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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.
For week 3 of 2023, all non-influenza respiratory virus activity has increased. Adenovirus and human metapneumovirus detections have increased, reaching the highest counts of this season so far. RSV, rhinovirus, parainfluenza type 1, parainfluenza virus type 2 and parainfluenza virus type 3 have all slightly increased in detections from the previous week.
For week 2 of 2023, Parainfluenza virus type 3 was the only non-influenza respiratory virus that had increased in detections. RSV, parainfluenza virus type 1, human metapneumovirus, and adenovirus all decreased in activity from the previous week. Rhinovirus and parainfluenza virus type 2 detections remained the same.
For week 1 of 2023, Human metapneumovirus activity increased substantially, reaching similar counts to this time last year. Rhinovirus, parainfluenza virus type 1 and RSV saw increases in detections. Parainfluenza type 2, parainfluenza type 3 and adenovirus have decreased in activity from the previous week.