It follows the US’s approval of the Pfizer vaccine for five- to 11-year-olds.
Writing on Twitter, the giant yellow bird – who is eternally six years old – said: “I got the COVID-19 vaccine today! My wing is feeling a little sore, but it’ll give my body an extra protective boost that keeps me and others healthy.
“Ms. @EricaRHill even said I’ve been getting vaccines since I was a little bird. I had no idea!”
However, Senator Ted Cruz – who is vaccinated, and has previously said “I believe in vaccines” – responded with: “Government propaganda … for your 5 year old!”
However, President Joe congratulated the Sesame Street resident and said: “Good on ya, @BigBird. Getting vaccinated is the best way to keep your whole neighborhood safe.”
A number of American rightwingers had piled in after Senator Cruz tweeted, with Steve Cortes, a host on the conservative Newsmax network, adding: “This kind of propaganda is actually evil.”
Lisa Boothe, a Fox News contributor, accused the television animal of “brainwashing children who are not at risk of COVID.”