Effectiveness of two and three doses of COVID-19 mRNA vaccines against infection, symptoms, and severity in the pre-omicron era: A time-dependent gradient
Author:
Sukik LayanORCID,
Chemaitelly HiamORCID,
Ayoub Houssein H.,
Coyle Peter,
Tang PatrickORCID,
Yassine Hadi M.,
Al Thani Asmaa A.,
Hasan Mohammad R.,
Al-Kanaani Zaina,
Al-Kuwari Einas,
Jeremijenko AndrewORCID,
Kaleeckal Anvar Hassan,
Latif Ali Nizar,
Shaik Riyazuddin Mohammad,
Abdul-Rahim Hanan F.,
Nasrallah Gheyath K.,
Al-Kuwari Mohamed Ghaith,
Butt Adeel A.,
Al-Romaihi Hamad Eid,
Al-Thani Mohamed H.,
Al-Khal Abdullatif,
Bertollini Roberto,
Abdel-Rahman Manar E.,
Abu-Raddad Laith J.