Weekly Cumulative Influenza Vaccination Coverage, Children 6 months through 17 years, United States, 2019-2020 Compared with 2020-2021
• Influenza vaccination coverage among children is assessed through the National Immunization Survey-Flu (NIS-Flu) annually, providing weekly influenza vaccination coverage estimates for children 6 months–17 years based upon parental report. (
https://www.cdc.gov/vaccines/imz-managers/nis/about.html)
o NIS-Flu is a national random-digit-dialed cellular telephone survey of households conducted during the flu season (October-June).
• Additional information about NIS-Flu methods and estimates from the 2019-2020 season are available at:
https://www.cdc.gov/flu/fluvaxview/coverage-1920estimates.htm.