Elmo received his COVID-19 vaccine.
His father Louie said his son was "super-duper" while getting the vaccination, which recently became widely available for children under five in the United States.
In the clip, Louie revealed that he spoke to a doctor before allowing Elmo to get immunized.
"I had a lot of questions about Elmo getting the covid vaccine. Was it safe? Was it the right decision? I talked to our pediatrician so I could make the right choice," he explained.
He added, "I learned that Elmo getting vaccinated is the best way to keep himself, our friends, neighbors and everyone else healthy and enjoying the things they love," he added.
Earlier this month, the Food and Drug Administration said parents and caregivers can "have confidence in the safety and effectiveness of these COVID-19 vaccines."
After the PSA was released, Texas Senator Ted Cruz — who is vaccinated himself and said he supports the vaccine, just not federal mandates — criticized Sesame Street for having Elmo "aggressively advocate for vaccinating children UNDER 5."