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Figure 1. Number and Percent of Positive Influenza Tests, Sentinel Settings, Snohomish County, 2019-2020.
Source: Snohomish Health District Influenza Surveillance System
Figure 2. Guide for considering influenza testing when influenza viruses are circulating in the community:
Source: Centers for Disease Control and Prevention. https://www.cdc.gov/flu/professionals/diagnosis/considerinfluenza-testing.htm
Reports to the Snohomish Health District show an uptick in influenza in Snohomish County since midNovember. Multiple patients have been hospitalized with influenza-like illness.
It is still early in the season and vaccination is a crucial tool for limiting the spread of influenza and protecting groups who are at higher risk of severe complications.
During the 2018-19 season, 26 influenza-related deaths and 362 hospitalizations were reported in Snohomish County.
The Snohomish Health District works in partnership with local hospitals to track influenza data. Weekly reports are posted online during the season, generally on Fridays. They are available at www.snohd.org/flu.