[HTML][HTML] mRNA-1273 COVID-19 vaccine effectiveness against the B. 1.1. 7 and B. 1.351 variants and severe COVID-19 disease in Qatar
The SARS-CoV-2 pandemic continues to be a global health concern. The mRNA-1273
(Moderna) vaccine was reported to have an efficacy of 94.1% at preventing symptomatic …
(Moderna) vaccine was reported to have an efficacy of 94.1% at preventing symptomatic …
[HTML][HTML] Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA. 1 and BA. 2 subvariants in Qatar
Abstract 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 …
conducted a matched, test-negative, case-control study to estimate duration of protection of …
[HTML][HTML] BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar
With the global expansion of the highly transmissible SARS-CoV-2 Delta (B. 1.617. 2)
variant, we conducted a matched test-negative case–control study to assess the real-world …
variant, we conducted a matched test-negative case–control study to assess the real-world …
Duration of immune protection of SARS-CoV-2 natural infection against reinfection
H Chemaitelly, N Nagelkerke, HH Ayoub… - Journal of Travel …, 2022 - academic.oup.com
Background The future of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-
2) pandemic hinges on virus evolution and duration of immune protection of natural infection …
2) pandemic hinges on virus evolution and duration of immune protection of natural infection …
[HTML][HTML] SARS-CoV-2 antibody-positivity protects against reinfection for at least seven months with 95% efficacy
LJ Abu-Raddad, H Chemaitelly, P Coyle… - …, 2021 - thelancet.com
Background Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-
CoV-2) has been documented, raising public health concerns. SARS-CoV-2 reinfections …
CoV-2) has been documented, raising public health concerns. SARS-CoV-2 reinfections …
Assessment of the risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reinfection in an intense reexposure setting
LJ Abu-Raddad, H Chemaitelly… - Clinical Infectious …, 2021 - academic.oup.com
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 …
CoV-2) is unknown. We assessed the risk and incidence rate of documented SARS-CoV-2 …
Association of prior SARS-CoV-2 infection with risk of breakthrough infection following mRNA vaccination in Qatar
Importance The effect of prior SARS-CoV-2 infection on vaccine protection remains poorly
understood. Objective To assess protection from SARS-CoV-2 breakthrough infection after …
understood. Objective To assess protection from SARS-CoV-2 breakthrough infection after …
[HTML][HTML] Long-term COVID-19 booster effectiveness by infection history and clinical vulnerability and immune imprinting: a retrospective population-based cohort study
Background Long-term effectiveness of COVID-19 mRNA boosters in populations with
different previous infection histories and clinical vulnerability profiles is inadequately …
different previous infection histories and clinical vulnerability profiles is inadequately …
[HTML][HTML] Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective …
Background Understanding protection conferred by natural SARS-CoV-2 infection versus
COVID-19 vaccination is important for informing vaccine mandate decisions. We compared …
COVID-19 vaccination is important for informing vaccine mandate decisions. We compared …
[HTML][HTML] Relative infectiousness of SARS-CoV-2 vaccine breakthrough infections, reinfections, and primary infections
SARS-CoV-2 breakthrough infections in vaccinated individuals and in those who had a prior
infection have been observed globally, but the transmission potential of these infections is …
infection have been observed globally, but the transmission potential of these infections is …