تصفح Biomedical Research Center حسب المؤلف "Smatti, Maria K."
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Antibody-dependent enhancement (ADE) of SARS-CoV-2 in patients exposed to MERS-CoV and SARS-CoV-2 antigens
Thomas, Swapna; Smatti, Maria K.; Alsulaiti, Haya; Zedan, Hadeel T.; Eid, Ali H.; Hssain, Ali A.; Abu Raddad, Laith J.; Gentilcore, Giusy; Ouhtit, Allal; Althani, Asmaa A.; Nasrallah, Gheyath K.; Grivel, Jean Charles; Yassine, Hadi M.... more authors ... less authors ( Wiley , 2024 , Article)This study evaluated the potential for antibody-dependent enhancement (ADE) in serum samples from patients exposed to Middle East respiratory syndrome coronavirus (MERS-CoV). Furthermore, we evaluated the effect of severe ... -
Assessment of Broadly Reactive Responses in Patients With MERS-CoV Infection and SARS-CoV-2 Vaccination
Zedan, Hadeel T.; Smatti, Maria K.; Thomas, Swapna; Nasrallah, Gheyath K.; Afifi, Nahla M.; Hssain, Ali Ait; Abu Raddad, Laith J.; Coyle, Peter V.; Grivel, Jean Charles; Almaslamani, Muna A.; Althani, Asmaa A.; Yassine, Hadi M.... more authors ... less authors ( American Medical Association , 2023 , Article)Importance: In the ongoing COVID-19 pandemic, there remain unanswered questions regarding the nature and importance of the humoral immune response against other coronaviruses. Although coinfection of the Middle East ... -
Comparative analysis of within-host diversity among vaccinated COVID-19 patients infected with different SARS-CoV-2 variants
Hebah A., Al-Khatib; Smatti, Maria K.; Ali, Fatma H.; Zedan, Hadeel T.; Thomas, Swapna; Ahmed, Muna N.; El-kahlout, Reham A.; Al Bader, Mashael A.; Elgakhlab, Dina; Coyle, Peter V.; Abu-Raddad, Laith J.; Al Thani, Asma A.; Yassine, Hadi M.... more authors ... less authors ( Elsevier , 2022 , Article)Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a rapidly evolving RNA virus that mutates within hosts and exists as viral quasispecies. Here, we evaluated the within-host diversity among vaccinated and ... -
Demographics and Epidemiology of Hepatitis B in the State of Qatar: A Five-Year Surveillance-Based Incidence Study
Al Romaihi, Hamad E.; Ganesan, Nandakumar; Farag, Elmoubasher A.; Smatti, Maria K.; Nasrallah, Gheyath K.; Himatt, Sayed M.; Derbala, Moutaz F.; Alshamali, Maha; Mahadoon, Lylu K.; Khogali, Hayat S.; Sallam, Mohamed; Al Thani, Asmaa A.; Al Thani, Mohammed; Al Kaabi, Saad; Yassine, Hadi M.... more authors ... less authors ( MDPI , 2019 , Article)Background: Expatriates represent >80% of Qatar’s population, mostly arriving from countries in Africa and Asia that are endemic with many diseases. This increases the risk for introducing new pathogens into the country ... -
Duration of immune protection of SARS-CoV-2 natural infection against reinfection.
Chemaitelly, Hiam; Nagelkerke, Nico; Ayoub, Houssein H; Coyle, Peter; Tang, Patrick; Yassine, Hadi M; Al-Khatib, Hebah A; Smatti, Maria K; Hasan, Mohammad R; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; 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; Abu-Raddad, Laith J... more authors ... less authors ( Oxford University Press , 2022 , Article)The future of the SARS-CoV-2 pandemic hinges on virus evolution and duration of immune protection of natural infection against reinfection. We investigated duration of protection afforded by natural infection, the effect ... -
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar.
Chemaitelly, Hiam; Ayoub, Houssein H; AlMukdad, Sawsan; Coyle, Peter; Tang, Patrick; Yassine, Hadi M; Al-Khatib, Hebah A; Smatti, Maria K; Hasan, Mohammad R; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; 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; Abu-Raddad, Laith J... more authors ... less authors ( Nature Research , 2022 , Article)SARS-CoV-2 Omicron BA.1 and BA.2 subvariants are genetically divergent. We conducted a matched, test-negative, case-control study to estimate duration of protection of the second and third/booster doses of mRNA COVID-19 ... -
Effects of BA.1/BA.2 subvariant, vaccination, and prior infection on infectiousness of SARS-CoV-2 omicron infections.
Qassim, Suelen H; Chemaitelly, Hiam; Ayoub, Houssein H; AlMukdad, Sawsan; Tang, Patrick; Hasan, Mohammad R; Yassine, Hadi M; Al-Khatib, Hebah A; Smatti, Maria K; Abdul-Rahim, Hanan F; Nasrallah, Gheyath K; Al-Kuwari, Mohamed Ghaith; Al-Khal, Abdullatif; Coyle, Peter; Kaleeckal, Anvar Hassan; Shaik, Riyazuddin Mohammad; Latif, Ali Nizar; Al-Kuwari, Einas; Jeremijenko, Andrew; Butt, Adeel A; Bertollini, Roberto; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H; Abu-Raddad, Laith J... more authors ... less authors ( Oxford University Press , 2022 , Article)Compared to BA.1, BA.2 was associated with lower RT-qPCR cycle threshold (Ct) value-3.53 fewer cycles (95% CI: 3.46-3.60), signifying higher infectiousness. This may reflect higher viral load and/or longer duration of ... -
Effects of SARS-CoV-2 Alpha, Beta, and Delta variants, age, vaccination, and prior infection on infectiousness of SARS-CoV-2 infections
Qassim, Suelen H.; Hasan, Mohammad R.; Tang, Patrick; Chemaitelly, Hiam; Ayoub, Houssein H.; Yassine, Hadi M.; Al-Khatib, Hebah A.; Smatti, Maria K.; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed Ghaith; Al-Khal, Abdullatif; Coyle, Peter; Gillani, Imtiaz; Kaleeckal, Anvar Hassan; Shaik, Riyazuddin Mohammad; Latif, Ali Nizar; Al-Kuwari, Einas; Jeremijenko, Andrew; Butt, Adeel A.; Bertollini, Roberto; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H.; Abu-Raddad, Laith J.... more authors ... less authors ( Frontiers Media , 2022 , Article)In 2021, Qatar experienced considerable incidence of SARS-CoV-2 infection that was dominated sequentially by the Alpha, Beta, and Delta variants. Using the cycle threshold (Ct) value of an RT-qPCR-positive test to proxy ... -
Epidemiological, Molecular, and Clinical Features of Norovirus Infections among Pediatric Patients in Qatar
Mathew, Shilu; Alansari, Khalid; Smatti, Maria K.; Zaraket, Hassan; Al Thani, Asmaa A.; Yassine, Hadi M.... more authors ... less authors ( MDPI , 2019 , Article)Abstract: Background: Norovirus (NoV) is recognized as the second most important etiological agent leading to acute gastroenteritis globally. In order to determine the burden and characteristics of NoV infections in children ... -
Epidemiological, molecular, and clinical features of norovirus infections among pediatric patients in Qatar
Mathew, S.; Alansari, Khalid; Smatti, Maria K.; Zaraket, Hassan; Al Thani, Asmaa A.; Yassine, Hadi M.... more authors ... less authors ( MDPI AG , 2019 , Article)Background: Norovirus (NoV) is recognized as the second most important etiological agent leading to acute gastroenteritis globally. In order to determine the burden and characteristics of NoV infections in children in ... -
Mixed Viral-Bacterial Infections and Their Effects on Gut Microbiota and Clinical Illnesses in Children
Mathew, S.; Smatti, Maria K.; Al Ansari, Khalid; Nasrallah, Gheyath K.; Al Thani, Asmaa A.; Yassine, Hadi M.... more authors ... less authors ( Nature Publishing Group , 2019 , Article)Acute gastroenteritis remains a major cause of morbidity and mortality among young children worldwide. It accounts for approximately 1.34 million deaths annually in children younger than five years. Infection can be caused ... -
Persistence of spike-specific immune responses in BNT162b2-vaccinated donors and generation of rapid ex-vivo T cells expansion protocol for adoptive immunotherapy: A pilot study
Mestiri, Sarra; Merhi, Maysaloun; Inchakalody, Varghese P.; Taib, Nassiba; Smatti, Maria K.; Ahmad, Fareed; Raza, Afsheen; Ali, Fatma H.; Hydrose, Shereena; Fernandes, Queenie; Ansari, Abdul W.; Sahir, Fairooz; Al-Zaidan, Lobna; Jalis, Munir; Ghoul, Mokhtar; Allahverdi, Niloofar; Al Homsi, Mohammed U.; Uddin, Shahab; Jeremijenko, Andrew Martin; Nimir, Mai; Abu-Raddad, Laith J.; Abid, Fatma Ben; Zaqout, Ahmed; Alfheid, Sameer R.; Saqr, Hassan Mohamed Hassan; Omrani, Ali S.; Hssain, Ali Ait; Al Maslamani, Muna; Yassine, Hadi M.; Dermime, Said... more authors ... less authors ( Frontiers Media , 2023 , Article)Introduction: The BNT162b2 mRNA-based vaccine has shown high efficacy in preventing COVID-19 infection but there are limited data on the types and persistence of the humoral and T cell responses to such a vaccine. Methods: ... -
Prevalence and Phylogenetic Analysis of Parvovirus (B19V) among Blood Donors with Different Nationalities Residing in Qatar
Abdelrahman, Doua; Al-Sadeq, Duaa W.; Smatti, Maria K.; Taleb, Sara A.; AbuOdeh, Raed O.; Al-Absi, Enas S.; Al-Thani, Asmaa A.; Coyle, Peter. V.; Al-Dewik, Nader; Al Qahtani, Ahmed A.; Yassine, Hadi M.; Nasrallah, Gheyath K.... more authors ... less authors ( MDPI , 2021 , Article)Human parvovirus (B19V) is the causative agent of erythema infectiosum in children and is linked to a wide range of clinical manifestations. Studies related to B19V prevalence in the Middle East and North Africa (MENA) ... -
Protection against Reinfection with the Omicron BA.2.75 Subvariant
Chemaitelly, Hiam; Tang, Patrick; Coyle, Peter; Yassine, Hadi M.; Al-Khatib, Hebah A.; Smatti, Maria K.; Hasan, Mohammad R.; Ayoub, Houssein H.; Altarawneh, Heba N.; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; Kaleeckal, Anvar H.; Latif, Ali N.; Shaik, Riyazuddin M.; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed G.; Butt, Adeel A.; Al-Romaihi, Hamad E.; Al-Thani, Mohamed H.; Al-Khal, Abdullatif; Bertollini, Roberto; Abu-Raddad, Laith J.... more authors ... less authors ( Massachusetts Medical Society , 2023 , Other)The BA.2.75 sublineage of the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may escape neutralizing antibodies. The BA.2.75 sublineage (primarily the BA.2.75.2 subvariant) ... -
Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective cohort study
Hiam, Chemaitelly; Ayoub, Houssein H; AlMukdad, Sawsan; Coyle, Peter; Tang, Patrick; Yassine, Hadi M; Al-Khatib, Hebah A; Smatti, Maria K; Hasan, Mohammad R; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; 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; Abu-Raddad, Laith J... more authors ... less authors ( Elsevier , 2022 , Article)BackgroundUnderstanding protection conferred by natural SARS-CoV-2 infection versus COVID-19 vaccination is important for informing vaccine mandate decisions. We compared protection conferred by natural infection versus ... -
SARS-CoV-2 infection triggers more potent antibody-dependent cellular cytotoxicity (ADCC) responses than mRNA-, vector-, and inactivated virus-based COVID-19 vaccines
Zedan, Hadeel T.; Smatti, Maria K.; Al-Sadeq, Duaa W.; Al Khatib, Hebah A.; Nicolai, Eleonora; Pieri, Massimo; Bernardini, Sergio; Hssain, Ali Ait; Taleb, Sara; Qotba, Hamda; Issa, Khodr; Abu Raddad, Laith J.; Althani, Asmaa A.; Nasrallah, Gheyath K.; Yassine, Hadi M.... more authors ... less authors ( Wiley , 2024 , Article)Neutralizing antibodies (NAbs) are elicited after infection and vaccination and have been well studied. However, their antibody-dependent cellular cytotoxicity (ADCC) functionality is still poorly characterized. Here, we ... -
Vaccine evaluation and genotype characterization in children infected with rotavirus in Qatar
Mathew, Shilu; Al Khatib, Hebah A.; Al Ibrahim, Malak; Al Ansari, Khalid; Smatti, Maria K.; Nasrallah, Gheyath K.; Ibrahim, Emad; Al Thani, Asmaa A.; Zaraket, Hassan; Yassine, Hadi M.... more authors ... less authors ( Springer Nature , 2023 , Article)Background: We characterized and identified the genetic and antigenic variations of circulating rotavirus strains in comparison to used rotavirus vaccines. Methods: Rotavirus-positive samples (n = 231) were collected and ... -
Viral-Induced Enhanced Disease Illness
Smatti, Maria K; Al Thani, Asmaa A; Yassine, Hadi M ( Frontiers Media , 2018 , Article)Understanding immune responses to viral infections is crucial to progress in the quest for effective infection prevention and control. The host immunity involves various mechanisms to combat viral infections. Under certain ... -
Will influenza A(H3N8) cause a major public health threat?
Hadi M., Yassine; Smatti, Maria K. ( Elsevier , 2022 , Other)The diversity of zoonotic influenza viruses and their ability to cross the species barrier has always been alarming and requires continuous surveillance in both human and animal populations. Avian A(H3N8) influenza viruses ...