In addition to flu viruses, several other respiratory viruses also spread during flu season and can cause symptoms similar to those seen with flu infection. The data are used to update FluView and FluView Interactive on the following Friday.ĭo other respiratory viruses circulate during flu season? The data are then downloaded, compiled, and analyzed at CDC. Each surveillance participant is requested to summarize the weekly data and submit it to CDC by the following Tuesday afternoon. Influenza surveillance data collection is based on a reporting week that starts on Sunday and ends on the following Saturday of each week. Why is there a week-long lag between when influenza surveillance data is collected and when it’s reported? More information about Influenza Surveillance in the United States is available. These surveillance components allow CDC to determine when and where influenza activity is occurring, determine what types of influenza viruses are circulating, detect changes in the influenza viruses collected and analyzed, track patterns of influenza-related illness, and measure the impact of influenza in the United States. Measure the impact influenza is having on hospitalizations and deaths in the United States.Determine what influenza viruses are circulating. Find out when and where influenza activity is occurring.Information in five categories is collected from nine different data sources that allow CDC to: influenza surveillance system is a collaborative effort between CDC and its many partners in state and local health departments, public health and clinical laboratories, vital statistics offices, health care providers, and clinics and emergency departments. Influenza Summary Update is updated each week. The U.S. CDC collects, compiles, and analyzes information on influenza activity year-round in the United States and produces FluView, a weekly surveillance report, and FluView Interactive, which allows for more in-depth exploration of influenza surveillance data. The overall health impact (e.g., infections, hospitalizations, and deaths) from flu varies from season to season. How does CDC monitor the progress of flu season?
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