Entertainment Pfizer COVID-19 vaccine safe, effective on adolescents in trial, companies say By - March 31, 2021 0 337 Facebook Twitter Pinterest WhatsApp Pfizer Inc and BioNTech SE said on Wednesday their COVID-19 vaccine was safe and effective and produced robust antibody responses in 12 to 15-year olds, paving the way for them to seek approval in the United States and Europe in weeks. The read-out…