skip to main content

How to find us

Phone: 206-296-4600
TTY Relay: 711

Toll-free: 800-325-6165

Click here to email us

Instructions to submit a Public Records Request

2009-2010 influenza surveillance summaries

Weekly Snapshot updated for Week 5 (ending 2/6/10)
Please note that given the recent decline in influenza activity, only one situation report will be prepared per week until further notice.

Snapshot updated 2/8/10:

  • Emergency department (ED) visits for influenza like illness (ILI) held steady for the ninth consecutive week after declining for five consecutive weeks.
  • Hospital admissions for laboratory-confirmed influenza have held steady for the past several weeks.
  • No influenza deaths occurred in King County residents during week 5.
  • The percentage of specimens testing positive for influenza from our outpatient surveillance system is below the average proportion usually observed at this time of year.
  • The percentage of rapid antigen tests positive for influenza is below the average proportion observed this time of year.
  • Thirteen long-term care facilities have reported cases of influenza like illness in their facilities since mid-October.
  • School absenteeism has been low and stable in recent weeks, with the majority of schools reporting <10% of students absent.

See current surveillance and testing guidelines for 2009 H1N1 influenza.

2010 Surveillance reports (PDF):

2009 Surveillance reports (PDF):

Get Flu Season Activity
e-mail updates
As a subscriber, you'll get an email alerting you of significant information posted to this page.

see also
Seattle Fire Department (SFD) Surveillance for Influenza-Like Illness
Graphs and tables on the number of 911 calls and the percent and number of patients seen by SFD with flu-like symptoms. Updated daily.
H1N1 influenza (swine flu)

Get Adobe ReaderThe flu surveillance reports are in Adobe PDF format. Adobe Acrobat Reader must be installed on your computer to open PDFs. Download and install Reader for free.