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The Marin County Department of Health and Human Services conducts local influenza surveillance during flu season each year and offers periodic updates to you, our healthcare providers.
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During the last week of February, influenza was circulating widely in Marin County, with elevated influenza-like illness activity (Figure 1). Twenty one percent of samples tested were positive for influenza. (Figure 2).
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Influenza-like illness activity: Influenza-like illness (ILI) activity has remained elevated through the week of Mar 2, 2019. See Figure 1 below.
*Please note ILI data has not been reported from all facilities for the last three weeks.
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Figure 1. Proportion of Visits due to ILI:
Kaiser San Rafael, MGH, and NCH Emergency Departments and Sutter Terra Linda Urgent Care, 2016-17, 2017-2018, and 2018-2019 Influenza Seasons
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Influenza testing: During week 9 (February 24 - March 2), 28 (21.2%) of the 137 specimens tested for influenza were positive. Of the positive specimens from week 9, 28 (96.6%) were influenza A and 1 (3.4%) was influenza B. During this influenza season through March 2nd, 299 specimens have tested positive for influenza. See Figure 2 below.
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Figure 2. Influenza Tests in Marin County, 2018-19 Influenza Season
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PROVISIONAL DATA, SUBJECT TO CHANGE.
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Visit MarinFlu.org for influenza vaccination, testing, and treatment recommendations.
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Copyright © 2019