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Volume 14, Number 1—January 2008


Telephone Survey to Assess Influenza-like Illness, United States, 2006

Joseph L. Malone*Comments to Author , Mohammad Madjid†, and S. Ward Casscells*‡
Author affiliations: *University of Texas Health Science Center, Houston, Texas, USA; †Texas Heart Institute, Houston, Texas, USA; ‡St. Luke’s Episcopal Hospital, Houston, Texas, USA

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Table 1

Current influenza surveillance systems reporting to the US Centers for Disease Control and Prevention*

SystemDescriptionReporting frequency
Sentinel Provider Network (SPN)Reports percentage of outpatient visits for influenza-like illness and total patients seen for any reason from a network of 2,300 nationwide healthcare providersWeekly
Emerging Infections Program (EIP)Reports laboratory-confirmed influenza-associated hospitalizations of children <18 years of age in 11 US communitiesBiweekly
New Vaccine Surveillance Network (NVSN)Reports laboratory-confirmed influenza-associated hospitalizations of children <5 years of age in 3 US communitiesBiweekly
122 Cities Mortality Reporting SystemReports pneumonia- and influenza-related deaths and total no. deaths in 122 US citiesWeekly
National Notifiable Disease Surveillance System (NNDSS)Reports influenza-associated pediatric deaths recorded by participating state health departmentsWeekly
State and Territorial Epidemiologists ReportReports overall level of influenza activity in respective states, territories, or bothWeekly
US World Health Organization and Global Influenza Surveillance Network; National Respiratory and Enteric Virus Surveillance System (NREVSS)Report no. influenza laboratory tests performed and no. positive results by type and, in some cases, subtypeWeekly

*See (2,3).

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