Influenza-like Illness Surveillance Program (ILINet)

Now You Can Help With Influenza Surveillance in Only a Few Minutes a Week!

The ILINet Program is a national outpatient influenza illness surveillance program. Healthcare providers (ILINet Providers) that participate in the program report information on patient visits for influenza-like illness (ILI) collected through the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet). The national ILINet Program consists of more than 2,700 outpatient healthcare providers in all 50 states, the District of Columbia and the U.S. Virgin Islands reporting more than 30 million patient visits each year. The New York State (NYS) ILINet Program consists of 100 providers in various specialties covering 34 counties. Influenza-like Illness Surveillance Program (ILINet) Provider Distribution Map (PDF, 340KB)

Data reported by ILINet providers, in combination with other influenza surveillance data, provide a state and nationwide picture of influenza virus and ILI activity.

NYS ILINet providers submit patient specimens to the NYSDOH Wadsworth Center for virus testing and sub-typing. All shipping supplies and testing fees are covered by the program.

What do ILINet Providers do?

  • Each week, ILINet providers report to CDC on the total number of patients seen and the number of those patients with ILI by age group.
  • ILINet providers submit patient specimens to the NYSDOH Wadsworth Center Virology Laboratory for virus testing and subtyping. A large portion of the specimens submitted are also tested for antiviral drug resistance.

Who can be an ILINet Provider?

  • Physicians
  • Physician Assistants
  • Nurse Practitioners
  • Nurses

Why volunteer?

  • The ILINet program is the primary source for outpatient influenza surveillance data in NYS and nationally.
  • Data and specimen submissions from ILINet providers are vital components of influenza surveillance in NYS and nationally. The information obtained is used to guide prevention and control activities, vaccine strain selection, antiviral resistance testing, and patient care.
  • ILINet providers receive feedback on the data submitted; summaries of regional, statewide and national influenza data; and free subscriptions to CDC's Morbidity and Mortality Weekly Report and Emerging Infectious Diseases Journal. Influenza-Like Illness Surveillance Program (ILINet) 2014-15 Influenza Season Summary (PDF, 427KB)
  • The most important consideration is that the data provided are critical for protecting the public's health.

Further Information

Contact Donna Gowie, Program Coordinator at the New York State Department of Health, at (518) 473-4439 or at

For providers located in New York City, please contact Beth Nivin, Program Coordinator at the New York City Department of Health and Mental Hygiene, at (347) 396-2616 or at