Browsing Biomedical Research Center by Author "J. Abu-Raddad, Laith"
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COVID-19 risk score as a public health tool to guide targeted testing: A demonstration study in Qatar
J. Abu-Raddad, Laith; Dargham, Soha; Chemaitelly, Hiam; Coyle, Peter; Al Kanaani, Zaina; Al Kuwari, Einas; A. Butt, Adeel; Jeremijenko, Andrew; Hassan Kaleeckal, Anvar; Nizar Latif, Ali; Mohammad Shaik, Riyazuddin; F. Abdul Rahim, Hanan; K. Nasrallah, Gheyath; M. Yassine, Hadi; G. Al Kuwari, Mohamed; Eid Al Romaihi, Hamad; H. Al-Thani, Mohamed; Al Khal, Abdullatif; Bertollini, Roberto... more authors ... less authors ( Public Library of Science , 2022 , Article)We developed a Coronavirus Disease 2019 (COVID-19) risk score to guide targeted RTPCR testing in Qatar. The Qatar national COVID-19 testing database, encompassing a total of 2,688,232 RT-PCR tests conducted between February ... -
Introduction and expansion of the SARS-CoV-2 B.1.1.7 variant and reinfections in Qatar: A nationally representative cohort study
J. Abu-Raddad, Laith; Chemaitelly, Hiam; H. Ayoub, Houssein; Coyle, Peter; A. Malek, Joel; A. Ahmed, Ayeda; A. Mohamoud, Yasmin; Younuskunju, Shameem; Tang, Patrick; Al Kanaani, Zaina; Al Kuwari, Einas; A. Butt, Adeel; Jeremijenko, Andrew; Hassan Kaleeckal, Anvar; Nizar Latif, Ali; Mohammad Shaik, Riyazuddin; F. Abdul Rahim, Hanan; K. Nasrallah, Gheyath; M. Yassine, Hadi; Ghaith Al Kuwari, Mohamed; Eid Al Romaihi, Hamad; H. Al-Thani, Mohamed; Al Khal, Abdullatif; Bertollini, Roberto... more authors ... less authors ( Public Library of Science , 2021 , Article)Background The epidemiology of the SARS-CoV-2 B.1.1.7 (or Alpha) variant is insufficiently understood. This study’s objective was to describe the introduction and expansion of this variant in Qatar and to estimate the ... -
Real-Time SARS-CoV-2 Genotyping by High-Throughput Multiplex PCR Reveals the Epidemiology of the Variants of Concern in Qatar
R. Hasan, Mohammad; K.R. Kalikiri, Mahesh; Mirza, Faheem; Sundararaju, Sathyavathi; Sharma, Anju; Xaba, Thabisile; Lorenz, Stephan; Chemaitelly, Hiam; A. El-Kahlout, Reham; Ming Tsui, Kin; M. Yassine, Hadi; V. Coyle, Peter; Al Khal, Abdullatif; Bertollini, Roberto; H. Al Thani, Mohamed; J. Abu-Raddad, Laith; Tang, Patrick... more authors ... less authors ( Elsevier , 2021 , Article)Complementing whole genome sequencing strategies with high-throughput multiplex RT-qPCR genotyping allows for more comprehensive and real-time tracking of SARS-CoV-2 variants of concern. During the second and third waves ... -
Reporting of RT-PCR cycle threshold (Ct) values during the first wave of COVID-19 in Qatar improved result interpretation in clinical and public health settings
V. Coyle, Peter; Hassan Al Molawi, Naema; Ali Ben Hadj Kacem, Mohamed; Awni El Kahlout, Reham; Al Kuwari, Einas; Al Khal, Abdullatif; Gillani, Imtiaz; Jeremijenko, Andrew; Saeb, Hatoun; Al Thani, Mohammad; Bertollini, Roberto; F. Abdul Rahim, Hanan; Chemaitelly, Hiam; Tang, Patrick; Nizar Latif, Ali; Al Kaabi, Saad; A. Rahman S. Al Maslamani, Muna; David Morris, Brendan; Al-Ansari, Nasser; Hassan Kaleeckal, Anvar; J. Abu Raddad, Laith... more authors ... less authors ( Microbiology Society , 2022 , Article)Introduction. The cycle threshold (Ct) value in real-time PCR (RT-PCR) is where a target-specific amplification signal becomes detectable and can infer viral load, risk of transmission and recovery. Use of Ct values in ...