Pfizer-BioNTech mRNA BNT162b2 Covid-19 vaccine protection against variants of concern after one versus two doses.
Laith J Abu-Raddad 
;
Hiam Chemaitelly ;
Hadi M Yassine;
Fatiha M Benslimane;
Hebah A Al Khatib;
Patrick Tang;
Joel A Malek;
Peter Coyle;
Houssein H Ayoub;
Zaina Al Kanaani;
+13 more...
Einas Al Kuwari;
Andrew Jeremijenko;
Anvar Hassan Kaleeckal;
Ali Nizar Latif;
Riyazuddin Mohammad Shaik;
Hanan F Abdul Rahim;
Gheyath K Nasrallah;
Mohamed Ghaith Al Kuwari;
Hamad Eid Al Romaihi;
Mohamed H Al-Thani;
Abdullatif Al Khal;
Adeel A Butt;
Roberto Bertollini;
(2021)
Pfizer-BioNTech mRNA BNT162b2 Covid-19 vaccine protection against variants of concern after one versus two doses.
Journal of travel medicine, 28 (7).
taab083-.
ISSN 1195-1982
DOI: 10.1093/jtm/taab083
;
Hiam Chemaitelly ;
Hadi M Yassine;
Fatiha M Benslimane;
Hebah A Al Khatib;
Patrick Tang;
Joel A Malek;
Peter Coyle;
Houssein H Ayoub;
Zaina Al Kanaani;
+13 more...
Einas Al Kuwari;
Andrew Jeremijenko;
Anvar Hassan Kaleeckal;
Ali Nizar Latif;
Riyazuddin Mohammad Shaik;
Hanan F Abdul Rahim;
Gheyath K Nasrallah;
Mohamed Ghaith Al Kuwari;
Hamad Eid Al Romaihi;
Mohamed H Al-Thani;
Abdullatif Al Khal;
Adeel A Butt;
Roberto Bertollini;
(2021)
Pfizer-BioNTech mRNA BNT162b2 Covid-19 vaccine protection against variants of concern after one versus two doses.
Journal of travel medicine, 28 (7).
taab083-.
ISSN 1195-1982
DOI: 10.1093/jtm/taab083
Key messages and recommendations Thispopulation-based study documentsBNT162b2vaccine protection week-by-week after the first dose. 75% of protection against infection and disease is reached 15-21 daysafter the first dose. Protection increased most rapidly against hospitalization and death and slowest against B.1.351infection.While protection of one dose beyond 21 days could not be assessed, findings support delaying the second vaccinedosein situations of limited vaccine suppliesand high incidences.
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