WASHINGTON, United States (AFP) — 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 […]