Eloise LaCour clutches her dolly as a nurse takes her blood pressure, then swabs the 3-year-old's delicate arm with alcohol.
"Tickle tickle," says Eloise's mom, Angelica LaCour. She's trying to get a smile. "Mommy's going to hug you, OK?"
A Stanford University nurse carefully gives the little girl her shot. Eloise is one of 144 children in the country who are part of a Phase 1 clinical trial to test Pfizer-BioNTech COVID-19 vaccines in the most adorable of study cohorts — those 5 and younger.
"That's it!" exclaims nurse manager Richard Brotherton, pulling the needle out of Eloise's arm.
Eloise barely flinches. In fact, under her mask it looks like she's smiling.
"Look at you! Brave kid!" beams her mom.