Background A year following the onset of the COVID-19 pandemic, new infections and
deaths continue to increase in Europe. Serological studies, through providing evidence of …

Background The emergence and rapid global spread of severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2) represents a major challenge to health services, and has …

We aimed to assess the prevalence of and factors associated with anti-severe acute
respiratory syndrome coronavirus-2 (SARS-CoV-2) positivity in a large population of adult …

A third wave of COVID-19 occurred after Christmas 2020 in Madrid, one of the European
pandemic epicenters. We noticed 6 major differential features to previous waves. First …

While the COVID-19 pandemic is still in progress, being under the fifth COVID-19 wave in
Madrid, over more than one year, Spain experienced a four wave pattern. The transmission …

During the ongoing global COVID-19 pandemic disease, like several countries, Romania
experienced a multiwaves pattern over more than two years. The spreading pattern of SARS …

Since the beginning of the COVID-19 pandemic, counting infected people has
underestimated asymptomatic cases. This literature sco** review assessed the …

Major determinants of death in patients hospitalized with CO... : Medicine Major determinants
of death in patients hospitalized with COVID-19 during the first epidemic wave in Madrid, Spain …

Our aim was to assess the seroprevalence of severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2) infection after the lockdown in a sample of the Corsican …

Background Seroprevalence surveys are essential to assess the age-specific prevalence of
pre-existing cross-reactive antibodies in the population with the emergence of a novel …