Abstract Coronavirus Disease 2019 (COVID-19) has been the most severe public health
challenge in this century. Two years after its emergence, the rapid development and …

Seroprevalence surveys suggest that more than a third and possibly more than half of the
global population has been infected with SARS-CoV-2 by early 2022. As large numbers of …

Background The ZF2001 vaccine, which contains a dimeric form of the receptor-binding
domain of severe acute respiratory syndrome coronavirus 2 and aluminum hydroxide as an …

Objectives: Describe the clinical manifestations, including extrapulmonary manifestations of
COVID-19. Outline the latest treatments available in the management of COVID-19 …

Multiple COVID-19 vaccines, representing diverse vaccine platforms, successfully protect
against symptomatic COVID-19 cases and deaths. Head-to-head comparisons of T cell, B …

Background The efficacy of SARS-CoV-2 vaccines in preventing severe COVID-19 illness
and death is uncertain due to the rarity of data in individual trials. How well the antibody …

Background It was urgent and necessary to synthesize the evidence for vaccine
effectiveness (VE) against SARS-CoV-2 variants of concern (VOC). We conducted a …

Objectives: Screen individuals based on exposure and symptom criteria to identify potential
COVID-19 cases. Identify the clinical features and radiological findings expected in patients …

Objective To evaluate the effectiveness of heterologous and homologous covid-19 vaccine
regimens with and without boosting in preventing covid-19 related infection, hospital …

Vaccines generate high-affinity antibodies by recruiting antigen-specific B cells to germinal
centers (GCs), but the mechanisms governing the recruitment to GCs on secondary …