The estimates for children are based on n=158,146 completed NIS-Flu interviews. The range of the Council of American Survey and Research Organizations (CASRO) response rates for the NIS-Flu for the 2021–22 season was 21.1%–25.0%. Respondents who indicated the child received a flu vaccination were asked the place where the child was vaccinated. For these children, month was imputed using the hot-deck imputation method from other survey respondents who matched the week of interview, age group, state of residence, and race/ethnicity of the child with missing data. Month of vaccination was missing for 19.1% of respondents who indicated their child was vaccinated. Respondents ≥18 years knowledgeable about the child’s vaccinations (hereafter referred to as “parent” in this report) were asked if their child received a flu vaccination since July 1, 2021, and the month of vaccination this information was not verified by medical records. The NIS-Flu is a national random-digit-dialed cellular telephone survey of households. The analyses included data collected from interviews completed from September 2021 for BRFSS and October 2021 for NIS-Flu through June 2022 for vaccinations received between July 1, 2021, and the time of interview or by May 31, 2022, for those interviewed in June 2022. įor this report, CDC analyzed data from the NIS-Flu for children 6 months through 17 years and the BRFSS for adults ≥18 years to estimate national- and state-level flu vaccination coverage for the 2021–22 flu season. Flu vaccines and COVID-19 vaccines, including the updated bivalent COVID-19 booster vaccine, can be given at the same appointment. To avoid missed opportunities for vaccination, providers should offer vaccination during routine health care visits and hospitalizations. September and October are ideal times to get vaccinated however, if flu viruses are circulating, vaccination should continue. Flu vaccination can help prevent or reduce the severity of flu illness. Getting a flu vaccine is especially important this fall and winter, when flu viruses and the virus that causes COVID-19 could be spreading simultaneously. Interpretation of the estimates in this report should be done with consideration of the surveys’ limitations, including reliance on self or parental reports of vaccination status and low response rates, as well as with consideration of consistency of estimates from other data sources. Racial/ethnic disparities in flu vaccination coverage persist. Half of all people ≥6 months (51.4%) were vaccinated during the 2021–22 season, a decrease of 0.7 percentage points from the prior season. Vaccination coverage with ≥1 dose of flu vaccine was 57.8% among children 6 months through 17 years, a decrease of 0.8 percentage points from the 2020–21 flu season, and flu vaccination coverage among adults ≥18 years was 49.4%, also a decrease of 0.8 percentage points from the prior season. population during the 2021–22 flu season. CDC analyzed data from two nationally representative surveys, the National Immunization Survey-Flu (NIS-Flu) and the Behavioral Risk Factor Surveillance System (BRFSS), to estimate flu vaccination coverage for the U.S. To reduce the risk of influenza (flu) illness, hospitalization, and death, the Centers for Disease Control and Prevention (CDC) recommends annual flu vaccination for all people ≥6 months who do not have contraindications.
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