April, 2025
As we move into April we continue to transition out of the typical respiratory virus season. Flu activity generally peaks between December and February and we are now seeing a gradual decline in cases. Influenza A and Respiratory Syncytial Virus (RSV) have shown a notable decline in recent weeks, suggesting a tapering of transmission. This shift may be attributed to improving weather conditions, reduced indoor congregation, and increasing population immunity. Despite the decline, it remains important to monitor for lingering cases, especially among vulnerable populations such as older adults, young children, and individuals with compromised immune systems.

Refer to www.cdc.gov/coronavirus/2019-ncov for the most recent updates.
Ordering information available here: https://depts.washington.edu/uwviro/.
View the UW Virology COVID-19 Dashboard for up to date testing numbers.
Follow the area’s epidemiological data each week on the UW Virology web site at https://depts.washington.edu/uwviro/respiratory-viral-epidemiology-data/.
Community detections: March, 2025
PCR Positives:
Adenovirus – 17
BK Virus – 248
CMV – 282
Coronavirus – 41 (NOT 2019-nCoV)
EBV – 42
Enterovirus – 0
HHV6 – 45
HHV8 – 2
HSV – 58
Influenza A – 187
Influenza B – 59
JC Virus – 0
Metapneumovirus – 20
Monkeypox – 2
Parainfluenza – 12
Parechovirus – 0
Parvo B19 – 10
Rhinovirus – 40
RSV – 78
VZV – 25