Background Duration of humoral and cellular memory in children previously infected SARS-
CoV-2 or vaccinated and subsequent risk of reinfection is still not fully elucidated. Methods …

Background Breakthrough infections of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) are well documented. The current study estimates breakthrough incidence …

Background This analysis examined the durability of antibodies present after SARS-CoV-2
infection and vaccination in children and adolescents. Methods Data were collected over 4 …

Background Following reduction of public health and social measures concurrent with SARS-
CoV-2 Omicron emergence in late 2021 in Australia, COVID-19 case notification rates rose …

Accurate estimates of natural and/or vaccine-induced antibodies to SARS-CoV-2 are difficult
to obtain. Although model-based estimates of seroprevalence have been proposed, they …

Background In low-and middle-income countries (LMICs) such as South Africa, there is
paucity of data on SARS-CoV-2 infections among children attending school, including …

Background Understanding the distinct immunologic responses to SARS-CoV-2 infection
among pediatric populations is pivotal in navigating the COVID-19 pandemic and informing …

Background Humoral response against SARS-CoV-2 is increasingly accepted as the central
correlate of immune protection. Recent pediatric seroprevalence data are extremely limited …

Background We compared postinfection severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) neutralizing antibody (nAb) responses among children and adults while the …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiological agent of
coronavirus disease 2019 (COVID-19), has rapidly spread worldwide. The monitoring of …