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 …

Importance Understanding the long-term immune response against SARS-CoV-2 infection
in children is crucial to optimize vaccination strategies. Although it is known that SARS-CoV …

Seroepidemiological studies to monitor antibody kinetics are important for assessing the
extent and spread of SARS-CoV-2 in a population. Noninvasive sampling methods are …

Post-COVID syndrome remains poorly studied in children and adolescents. Here, we aimed
to investigate the prevalence and risk factors of pediatric post-COVID in a population-based …

Abstracts Objectives To assess the dynamics of the anti-SARS-CoV-2 IgG antibody levels
and their efficacy against COVID-19. Methods We conducted a longitudinal serological …

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 …

Introduction Serological surveys offer the most direct measurement to define the immunity
status for numerous infectious diseases, such as COVID-19, and can provide valuable …

Although a more efficient adaptive humoral immune response has been proposed to
underlie the usually favorable outcome of pediatric COVID-19, the breadth of viral and …

Background: Antibody levels decline a few months post-acute COVID-19, but humoral
memory persists in adults. Age and disease severity may affect antibody responses. This …

Background: Antibodies are a measure of immunity after primary infection, which may help
protect against further SARS-CoV-2 infections. They may also provide some cross-protection …