La pandemia de COVID-19, que dura ya más de 2 años, ha tensionado la atención primaria
(AP) de salud hasta una preocupante situación actual de saturación y agotamiento. La …

Background More than two years into the COVID-19 pandemic, most of the population has
developed anti-SARS-CoV-2 antibodies from infection and/or vaccination. However, public …

Since the start of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
pandemic in 2020, acute coronavirus disease 2019 (COVID-19) has affected children of all …

Understanding the development of humoral immune responses of children and adolescents
to SARS-CoV-2 is essential for designing effective public health measures. Here we …

Background The medium-term impact of the COVID-19 pandemic on the wellbeing of
children and adolescents remains unclear. More than 2 years into the pandemic, we aimed …

Background Seroprevalence and the proportion of people with neutralizing activity
(functional immunity) against SARS-CoV-2 variants were high in early 2022. In this …

Background Routine case surveillance data for SARS-CoV-2 are incomplete,
unrepresentative, missing key variables of interest, and may be increasingly unreliable for …

There are concerns about acute and long-term mental health effects of the COVID-19
pandemic. This study examined the prevalence and predictors of psychological distress …

Author summary The use of biomarkers to measure immune responses in serum is crucial
for understanding population-level exposure and susceptibility to human pathogens …

Background Children and adolescents are highly vulnerable to the impact of sustained
stressors during developmentally sensitive times. We investigated how demographic …