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Influenza
in Orange County
Epidemiology & Assessment
Influenza Surveillance Information
Eye on Influenza
Current summaries of seasonal influenza activity and updates on
avian and pandemic influenza are found in the Eye on Influenza
newsletter. |
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OC Health
Care Agency
weekly flu update - (2008-09) |
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Eye on Influenza - Pandemic
H1N1 Flu Update
July 2, 2009 - Volume 5, Issue 19 |
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Eye on Influenza -
Novel H1N1 Flu (“Swine
Flu”)
June 19, 2009 - Volume 5, Issue 18 |
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Eye on Influenza -
Novel H1N1 Flu (“Swine
Flu”)
June 2, 2009 - Volume 5, Issue 17 |
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Eye on Influenza -
Novel H1N1 Flu (“Swine
Flu”)
May 21, 2009 - Volume 5, Issue 16 |
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Eye on Influenza -
Novel H1N1 Flu (“Swine
Flu”)
May 14, 2009 - Volume 5, Issue 15 |
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Eye on Influenza -
Novel H1N1 Flu (“Swine
Flu”)
May 7, 2009 - Volume 5, Issue 14 |
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Eye on Influenza - Swine
Influenza
April 24, 2009 - Volume 5, Issue 13 |
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Eye on Influenza
April 10, 2009 - Volume 5, Issue 12 |
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Eye on Influenza
March 31, 2009 - Volume 5, Issue 11 |
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Eye on Influenza
March 16, 2009 - Volume 5, Issue 10 |
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Eye on Influenza
February 27, 2009 - Volume 5, Issue
9 |
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Eye on Influenza
January 30, 2009 - Volume 5, Issue 8 |
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Eye on Influenza
January 12, 2009 - Volume 5, Issue 7 |
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Eye on Influenza
December 29, 2008 - Volume 5, Issue
6 |
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Eye on Influenza
December 15, 2008 - Volume 5, Issue
5 |
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Eye on Influenza
November 26, 2008 - Volume 5, Issue
4 |
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Eye on Influenza
November 14, 2008 - Volume 5, Issue
3 |
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Eye on Influenza
November 3, 2008 - Volume 5, Issue 2 |
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Eye on Influenza
October 17, 2008 - Volume 5, Issue 1 |
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Influenza Surveillance Information
(last updated 4/23/09)
Annual
influenza epidemics follow a winter seasonal pattern in the United
States with typical activity peaking during late December to March. Surveillance of influenza activity is important to guide
prevention and control activities, vaccine strain selection, and
patient care. In addition, surveillance activities help to monitor
and prepare for the impact of influenza on the healthcare system.
Influenza surveillance in California is particularly important to
monitor for importation of novel strains of influenza due to our
coastal location with several ports of entry for flights and
shipping from Asia.
Surveillance
for influenza activity in Orange County includes the monitoring of
the following components year-round:
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influenza
viruses:
specimens are submitted from participating hospitals, physicians,
and laboratories for tracking and strain-typing
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influenza-like
illnesses:
sentinel providers (physicians, nurse practitioners, physician
assistants) report outpatient influenza-like illnesses and submit
specimens
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pneumonia and
influenza deaths:
death certificates are reviewed for deaths from pneumonia or
influenza
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emergency room
saturation:
the hours that emergency rooms are “on diversion” or closed to new
patients because of saturation
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severe influenza
and deaths in children:
are reported by health care providers and hospital infection
control professionals
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outbreaks of
respiratory illness: are investigated and control measures are
instituted.
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enhanced
surveillance for avian influenza: health care providers are requested to report
any patients with fever and respiratory symptoms who traveled to
Asia in the 7 days prior to symptom onset
In addition, data
on hospital admissions for pneumonia and influenza from one Orange
County hospital is included in the California Department of Public
Health weekly influenza report. Data from all these components are
analyzed weekly, summarized, and compared with state and national
trends.
We are actively
recruiting physicians and other health care providers to participate
as sentinel providers for influenza surveillance. For more
information, please email:
EPI@ochca.com. To receive our influenza newsletter, please email
EPI@ochca.com.
For information on statewide influenza
activity, see
ww2.cdph.ca.gov/programs/vrdl/Pages/CaliforniaInfluenzaSurveillanceProject.aspx.
For information on
national influenza activity, see
www.cdc.gov/flu/weekly/fluactivity.htm.
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