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What is a Pandemic?

An influenza (flu) pandemic is a widespread outbreak of disease that occurs when a new flu virus appears that people have not been exposed to before. Pandemics are different from seasonal outbreaks of influenza. Seasonal flu outbreaks are caused by viruses that people have already been exposed to; flu shots are available to help prevent widespread illness, and impacts on society are less severe. Pandemic flu spreads easily from person to person and can cause serious illness because people do not have immunity to the new virus.

A pandemic may come and go in waves, each of which can last for months at a time. Everyday life could be disrupted due to people in communities across the country becoming ill at the same time. These disruptions could include everything from school and business closings to interruption of basic services such as public transportation and health care. An especially severe influenza pandemic could lead to high levels of illness, death, social disruption, and economic loss.

Important Websites to Track Swine Flu

Local Resources

  • NYSDOH Swine Flu Hotline: 800-808-1987
  • New York State Health Commissioner: 518-474-2011
  • Suffolk County Department of Health Influenza Hotline: (631) - 853-8405
  • Suffolk County Dept. of Health Services Commissioner: (631)-853-3005
  • Suffolk County Public Health Department: (631)-853-3055

Guidance Documents

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Last Modified: April 28, 2009
Please forward all questions about this site to: Joseph Falco


DOE, Office of ScienceOne of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven Science Associates, a limited-liability company founded by Stony Brook University, the largest academic user of Laboratory facilities, and Battelle, a nonprofit, applied science and technology organization.

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