Pfizer-BioNTech mRNA BNT162b2 Covid-19 vaccine protection against variants of concern after one versus two doses.
Laith Jamal Abu-RaddadHiam ChemaitellyHadi M YassineFatiha M BenslimaneHebah A Al KhatibPatrick TangJoel A MalekPeter CoyleHoussein H AyoubZaina Al KanaaniEinas Al KuwariAndrew JeremijenkoAnvar Hassan KaleeckalAli Nizar LatifRiyazuddin Mohammad ShaikHanan F Abdul RahimGheyath K NasrallahMohamed Ghaith Al KuwariHamad Eid Al RomaihiMohamed H Al-ThaniAbdullatif Al KhalAdeel A ButtRoberto BertolliniPublished in: Journal of travel medicine (2021)