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National Center for Health Statistics Mortality Surveillance Data

FluView: A Weekly Influenza Surveillance Report Prepared by the Influenza Division


All data are provisional and may change as more reports are received.

Mortality Surveillance Data from the National Center for Health Statistics:

The National Center for Health Statistics (NCHS) collects and disseminates the Nation's official vital statistics. These statistics are based on data provided to NCHS through contracts with the vital registration systems operated in the various jurisdictions legally responsible for the registration of deaths (i.e., death certificates) and other vital events. These data have previously only been released as annual final data files 12 months or more after the end of the data year. Recent NCHS efforts to improve the timeliness of jurisdiction reporting and modernize the national vital statistics infrastructure have created a system capable of supporting near real-time surveillance. Capitalizing on these new capabilities, NCHS and CDC’s Influenza Division have partnered to pilot the use of NCHS mortality surveillance data for Pneumonia and Influenza (P&I) mortality surveillance.

NCHS mortality surveillance data are presented by the week the death occurred. Nationally P&I percentages are released two weeks after the week of death to allow for collection of enough data to produce a stable P&I percentage at the national level. Collection of complete data is not expected, and reliable P&I ratios are not expected at the region and state level within this two week period. State and Region level counts will be released only after 20% of the expected number of deaths are reported through the system.

Below users can download the data by region or state. Data for previous weeks will be updated once per week with the most recent data.

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