[HTML][HTML] Protective effectiveness of previous SARS-CoV-2 infection and hybrid immunity against the omicron variant and severe disease: a systematic review and meta …

N Bobrovitz, H Ware, X Ma, Z Li, R Hosseini… - The Lancet Infectious …, 2023 - thelancet.com
Background The global surge in the omicron (B. 1.1. 529) variant has resulted in many
individuals with hybrid immunity (immunity developed through a combination of SARS-CoV …

Evaluation of waning of SARS-CoV-2 vaccine–induced immunity: a systematic review and meta-analysis

F Menegale, M Manica, A Zardini, G Guzzetta… - JAMA Network …, 2023 - jamanetwork.com
Importance Estimates of the rate of waning of vaccine effectiveness (VE) against COVID-19
are key to assess population levels of protection and future needs for booster doses to face …

Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA. 1 and BA. 2 subvariants in Qatar

H Chemaitelly, HH Ayoub, S AlMukdad, P Coyle… - Nature …, 2022 - nature.com
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 …

Effects of previous infection and vaccination on symptomatic omicron infections

HN Altarawneh, H Chemaitelly, HH Ayoub… - … England Journal of …, 2022 - Mass Medical Soc
Background The protection conferred by natural immunity, vaccination, and both against
symptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection with …

Waning of vaccine effectiveness against moderate and severe covid-19 among adults in the US from the VISION network: test negative, case-control study

JM Ferdinands, S Rao, BE Dixon, PK Mitchell… - Bmj, 2022 - bmj.com
Objective To estimate the effectiveness of mRNA vaccines against moderate and severe
covid-19 in adults by time since second, third, or fourth doses, and by age and …

Severity and outcomes of Omicron variant of SARS-CoV-2 compared to Delta variant and severity of Omicron sublineages: a systematic review and metanalysis

P Relan, NV Motaze, K Kothari, L Askie… - BMJ Global …, 2023 - gh.bmj.com
Objectives To compare severity and clinical outcomes from Omicron as compared with the
Delta variant and to compare outcomes between Omicron sublineages. Methods We …

Estimated protection of prior SARS-CoV-2 infection against reinfection with the Omicron variant among messenger RNA–vaccinated and nonvaccinated individuals in …

S Carazo, DM Skowronski, M Brisson… - JAMA network …, 2022 - jamanetwork.com
Importance The Omicron variant is phylogenetically and antigenically distinct from earlier
SARS-CoV-2 variants and the original vaccine strain. Protection conferred by prior SARS …

Role of COVID-19 vaccines in SARS-CoV-2 variants

Z Zhou, Y Zhu, M Chu - Frontiers in immunology, 2022 - frontiersin.org
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2), is a threat to the health of the global population. As the result …

Effectiveness of the pre-Omicron COVID-19 vaccines against Omicron in reducing infection, hospitalization, severity, and mortality compared to Delta and other …

P Paul, A El-Naas, O Hamad, MA Salameh… - Human Vaccines & …, 2023 - Taylor & Francis
Despite widespread mass rollout programs, the rapid spread of the SARS-CoV-2 Omicron
variant called into question the effectiveness of the existing vaccines against infection …

Effect of prior infection, vaccination, and hybrid immunity against symptomatic BA. 1 and BA. 2 Omicron infections and severe COVID-19 in Qatar

HN Altarawneh, H Chemaitelly, HH Ayoub, P Tang… - MedRxiv, 2022 - medrxiv.org
BACKGROUND Protection offered by five different forms of immunity, combining natural and
vaccine immunity, was investigated against SARS-CoV-2 Omicron symptomatic BA. 1 …