Pfizer

Joonas Leis , 12 years old boy, poses for a photo after getting a shot a coronavirus vaccine at a vaccination center inside a sports hall in Estonia.

Pfizer says its COVID vaccine works in children aged 5-11

Small number of heart inflammation cases linked to Pfizer vaccine

A health worker holds a vial of the AstraZeneca/Oxford Covid-19 coronavirus vaccine inside a Catholic church turned into a vaccination centre in Manila on May 21, 2021.

Why are COVID vaccines linked to blood clots? Scientists have answers