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Surveillance lessons from first-wave pandemic (H1N1) 2009, Northern California, USA

Roger Baxter1

  • 1Kaiser Permanente Vaccine Study Center, Oakland, California 94612, USA. roger.baxter@kp.org

Emerging Infectious Diseases
|March 6, 2010
PubMed

Insights

Monitoring pandemic (H1N1) 2009 activity using multiple data sources revealed disease patterns. Public perception of the epidemic may have influenced these observed patterns.

Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Surveillance

Background:

  • The 2009 pandemic influenza A (H1N1) virus emerged in April 2009.
  • Effective surveillance is crucial for understanding and managing influenza outbreaks.

Purpose of the Study:

  • To monitor influenza activity following the 2009 pandemic (H1N1) appearance.
  • To assess the utility of combined data sources for disease surveillance.

Main Methods:

  • Utilized laboratory, pharmacy, telephone call, and patient utilization data.
  • Analyzed combined datasets to identify patterns of influenza activity.

Main Results:

  • A combination of testing and utilization data indicated a pattern of disease activity.
  • Observed patterns may have been influenced by public perception of the epidemic.

Conclusions:

  • Integrated data sources can provide insights into influenza activity.
  • Public perception is a potential confounding factor in disease surveillance data.

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