The rapid development of multiple vaccines providing strong protection from severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been a major achievement …

Cellular and humoral immunity exhibit dynamic adaptation to the mutating SARS-CoV-2
virus. It is noteworthy that immune responses differ significantly, influenced by whether a …

Background Understanding and measuring the individual level of immune protection and its
persistence at both humoral and cellular levels after SARS-CoV-2 vaccination is mandatory …

Past severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is an
important determinant of protection from reinfection and of postvaccine immune responses …

The sustained epidemic of Omicron subvariants of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) is a worldwide concern, and older adults are at high risk. We …

The coronavirus disease 2019 (COVID-19) pandemic is caused by the severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, which is defined by its positive …

In the present study, immunogenicity data in 61 vaccinated healthcare workers (HCWs)
either infection naïve (naïve HCWs) or with infection of Delta and/or Omicron COVID-19 …

Neutralizing antibodies (NAbs) can be indicators of collective immunity, vaccine efficacy,
and the longevity of the humoral response. This study aimed to compare reactogenicity and …

Despite measures taken world-wide, the coronavirus disease 2019 (COVID-19) pandemic
continues. Because efficient antiviral drugs are not yet widely available, vaccination is the …

Waning of the immune response upon vaccination in SARS-CoV-2 infection is an important
subject of evaluation in this pandemic, mostly in healthcare workers (HCW) that are …