CURRENTNATIONAL Studies show efficacy of Pfizer vaccine as booster doseEditor Selangor JournalNovember 12, 2021November 13, 2021 by Editor Selangor JournalNovember 12, 2021November 13, 2021 PUTRAJAYA, Nov 12 — The findings from studies conducted abroad including Thailand, Chile and Turkey showed good efficacy of the Comirnaty vaccine developed by Pfizer-BioNTech...