Responses to the flu vaccination status questions were not verified by medical records. The BRFSS includes survey questions asking whether the respondent had received a flu vaccination in the past 12 months, and if so, in which month and year. The BRFSS is a state-based random-digit-dialed cellular and landline telephone survey which collects information on a variety of health conditions and risk behaviors from one randomly selected adult ≥18 years in a household. The estimates for children are based on n=145,783 completed NIS-Flu interviews. The range of the Council of American Survey and Research Organizations (CASRO) response rates for the NIS-Flu for the 2020–21 season was 21.8%–23.9%. Respondents who indicated the child received a flu vaccination were also asked the kind of place at which the child was vaccinated. For the 15.1% of respondents who indicated their child had been vaccinated but had a missing month of vaccination, month was imputed from other survey respondents with non-missing month of vaccination, matched for week of interview, age group, state of residence, and race/ethnicity using the hot-deck imputation method. Respondents ≥18 years knowledgeable about the child’s vaccinations (hereafter referred to as “parent” in this report) were asked if their child had received a flu vaccination since July 1, 2020, and, if so, in which month 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 during September (BRFSS) or October (NIS-Flu) 2020 through June 2021 and report on vaccinations received between Jand the time of interview or by for those interviewed in June. Guidance for vaccine planning during the COVID-19 pandemic is available.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 2020–21 flu season. To avoid missed opportunities for vaccination, providers should offer vaccination during routine health care visits and hospitalizations. September and October are good times to get vaccinated however, as long as flu viruses are circulating, vaccination should continue. Flu vaccination could help prevent or reduce the severity of flu illness and a reduction of outpatient illnesses, hospitalizations, and intensive care unit admissions could alleviate stress on the U.S. Getting a flu vaccine will be critical this fall and winter, because flu viruses and the virus that causes COVID-19 will likely be spreading simultaneously in the United States. Interpretation of the estimates in this report should take into account limitations of the surveys, including reliance on self- or parental report of vaccination status and low response rates, as well as level of consistency with findings from other surveys and data sources. Hispanic adults and Black adults had lower flu vaccination coverage than White adults and adults of other races. Non-Hispanic Black (Black) children had lower flu vaccination coverage than children in all other racial/ethnic groups, and Hispanic children had lower coverage than non-Hispanic White (White) children and children of other or multiple (other) races. Racial/ethnic disparities in flu vaccination coverage persist. Flu vaccination coverage has increased for adults over the past three flu seasons and had also been increasing for children until the 2020-21 season. Half (52.1%) of people ≥6 months were vaccinated during the 2020–21 season, similar to coverage in the prior season. Vaccination coverage with ≥1 dose of flu vaccine was 58.6% among children 6 months through 17 years, a decrease of 5.1 percentage points from the 2019–20 flu season, and flu vaccination coverage among adults ≥18 years was 50.2%, an increase of 1.8 percentage points from the prior season. population during the 2020–21 flu season. CDC analyzed data from two telephone 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 routine annual flu vaccination for all people ≥6 months who do not have contraindications.
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