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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 - (2007-08) |
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Eye on Influenza
October 3, 2008 - Volume 4, Issue 26 |
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Eye on Influenza
September 23, 2008 - Volume 4, Issue 25 |
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Eye on Influenza
September 8, 2008 - Volume 4, Issue 24 |
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Eye on Influenza
August 22, 2008 - Volume 4, Issue 23 |
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Eye on Influenza
August 11, 2008 - Volume 4, Issue 22 |
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Eye on Influenza
July 28, 2008 - Volume 4, Issue 21 |
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Eye on Influenza
July 11, 2008 - Volume 4, Issue 20 |
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Eye on Influenza
July 1, 2008 - Volume 4, Issue 19 |
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Eye on Influenza
June 13, 2008 - Volume 4, Issue
18 |
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Eye on Influenza
June 2, 2008 - Volume 4, Issue
17 |
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Eye on Influenza
May 16, 2008 - Volume 4, Issue
16 |
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Eye on Influenza
May 2, 2008 - Volume 4, Issue
15 |
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Eye on Influenza
April 18, 2008 - Volume 4, Issue
14 |
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Eye on Influenza
April 4, 2008 - Volume 4, Issue
13 |
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Eye on Influenza
March 21, 2008 - Volume 4, Issue
12 |
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Eye on Influenza
March 10, 2008 - Volume 4, Issue
11 |
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Eye on Influenza
February 22, 2008 - Volume 4, Issue
10 |
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Eye on Influenza
February 8, 2008 - Volume 4, Issue 9 |
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Eye on Influenza
February 1, 2008 - Volume 4, Issue
8 |
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Eye on Influenza
January 25, 2008 - Volume 4, Issue
7 |
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Eye on Influenza
January 11, 2008 - Volume 4, Issue
6 |
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Eye on Influenza
December 28, 2007 - Volume 4, Issue
5 |
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Eye on Influenza
December 14, 2007 - Volume 4, Issue
4 |
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Eye on Influenza
December 3, 2007 - Volume 4, Issue 3 |
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Eye on Influenza
November 16, 2007 - Volume 4, Issue
2 |
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Eye on Influenza
November 2, 2007 - Volume 4, Issue
1 |
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Influenza Surveillance Information
(last updated 4/18/07)
Annual
influenza epidemics follow a winter seasonal pattern in the United
States with typical activity peaking during late December to early
February. 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 10 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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