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Protection against the omicron variant from previous SARS-CoV-2 infection

Altarawneh, Heba N.; Chemaitelly, Hiam; Hasan, Mohammad R.; Ayoub, Houssein H.; Qassim, Suelen; ... more authors ... less authors ( Massachusetts Medical Society , 2022 , Other)

Natural infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicits strong protection against reinfection with the B.1.1.7 (alpha),1,2 B.1.351 (beta),1 and B.1.617.2 (delta)3 variants. However, the ...

Effectiveness of the neutralizing antibody sotrovimab among high-risk patients with mild-to-moderate SARS-CoV-2 in Qatar

Ahmed, Zaqout; Almaslamani, Muna A.; Chemaitelly, Hiam; Hashim, Samar A.; Ittaman, Ajithkumar; ... more authors ... less authors ( Elsevier , 2022 , Article)

ObjectivesTo estimate the real-world effectiveness of sotrovimab against severe, critical, or fatal COVID-19 in Qatar at a time in which most SARS-CoV-2 incidences occurred due to the BA.2 Omicron subvariant. MethodsWe ...

Protective Effect of Previous SARS-CoV-2 Infection against Omicron BA.4 and BA.5 Subvariants.

Altarawneh, Heba N; Chemaitelly, Hiam; Ayoub, Houssein H; Hasan, Mohammad R; Coyle, Peter; ... more authors ... less authors ( Massachusetts Medical Society , 2022 , Article)

The BA.4 and BA.5 subvariants of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.529 (omicron) variant have shown the capacity of escaping from neutralizing antibodies.1 These subvariants had an ...

Assessment of the Risk of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Reinfection in an Intense Reexposure Setting

Abu-Raddad, Laith J.; Chemaitelly, Hiam; Malek, Joel A.; Ahmed, Ayeda A.; Mohamoud, Yasmin A.; ... more authors ... less authors ( NLM (Medline) , 2021 , Article)

BACKGROUND: Risk of reinfection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is unknown. We assessed the risk and incidence rate of documented SARS-CoV-2 reinfection in a cohort of laboratory-confirmed ...

Immune Imprinting and Protection against Repeat Reinfection with SARS-CoV-2

Chemaitelly, Hiam; Ayoub, Houssein H.; Tang, Patrick; Hasan, Mohammad R.; Coyle, Peter; ... more authors ... less authors ( Massachusetts Medical Society , 2022 , Other)

More than 2 years into the coronavirus disease 2019 (Covid-19) pandemic, the global population carries heterogeneous immune histories derived from various exposures to infection, viral variants, and vaccination.1 Evidence ...