As updated COVID-19 boosters and flu shots become available, the Centers for Disease Control and Prevention (CDC) recommends that all adults receive these vaccinations to ensure they have the most up-to-date protections against these diseases.
The CDC recommends that all adults get three routine vaccines: COVID-19, influenza, and Tdap (tetanus, diphtheria, and whooping cough) or Td (tetanus and diphtheria). The agency also advises adults to stay up-to-date on various vaccines at different ages:
Flu vaccination rates for adults hovered between 38.8% and 43.6% from 2010–2017 and reached a recent low of 37.1% in 2017–2018. The 2020-2021 flu season had the highest vaccination rate, at 50.2% of adults.
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However, all age groups received the flu vaccine at lower rates in 2021–2022 than in 2019–2020 — 35.2% of adults ages 18-49 were vaccinated against the flu in 2021–2022.
During the 2022-2023 flu season, 46.9% of all adults in the US received a flu vaccine, according to CDC data.
By the end of the federal government’s pandemic state of emergency in May 2023, 92.3% of adults in the US had received at least one dose of a COVID-19 vaccine, and 79.1% had completed the primary series of the vaccine.
How many adults are up to date on COVID-19 vaccines?
By the end of the pandemic state of emergency in May 2023, 20.5% of all adults in the US were considered up-to-date on the COVID-19 vaccine. The CDC considered adults up-to-date if they received one dose of the updated (bivalent) booster.
COVID-19 vaccination rates by state
By May 2023, the percentage of adults who have received the updated (or bivalent) booster dose of COVID-19 vaccines in the US ranged from 8.6% in Mississippi to 38.6% in Vermont.