Pfizer begins Covid vaccine trial in young children

Pfizer said Thursday it had begun clinical trials for its Covid vaccine in children under the age of eleven, an early sign of the next stage of the global immunization campaign. "Together with our partner BioNTech, we have dosed the first healthy children in a global Phase 1/2/3 continuous study to further evaluate the safety, tolerability, and immunogenicity of the Pfizer-BioNTech Covid-19 vaccine," the company said in a statement to AFP. "We are proud to start this much needed study for children and families eagerly awaiting a possible vaccine option." According to details posted on the site clinicaltrials.gov, the company is testing three different dosing levels for use in this age group.  The company is already testing the shots in children aged 12 to 15, and its US emergency authorization covers people aged 16 and up.