What a load of horseshit.

This is what it means you dipshit:

"The sole incidence of a grade 3 adverse event in the 25 µg and 100 µg dose cohorts was a single participant at 100 µg who experienced grade 3 erythema (redness) around the injection site."

Oh wow! Someone got a rash! OOOMMMGGZZZZZ!!!!!!

Go get covid toe.