Article by Heather J Whitaker and Ruby Tsang et al, titled Pfizer-BioNTech and Oxford AstraZeneca COVID-19 vaccine effectiveness and immune response amongst individuals in clinical risk groups, dated 02/05/2022.
Article by Heather J Whitaker and Ruby Tsang et al, titled Pfizer-BioNTech and Oxford AstraZeneca COVID-19 vaccine effectiveness and immune response amongst individuals in clinical risk groups, dated 02/05/2022.