In the COVID-19 pandemic era, antibody testing against severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) has proven an invaluable tool and herein we highlight some of …

Natural infection with SARS-CoV-2 induces a robust circulating memory B cell (Bmem)
population, which remains stable in number at least 8 months post-infection despite the …

Background Despite the high level of protection against severe COVID-19 provided by the
currently available vaccines some breakthrough infections occur. Until now, there is no …

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 …

This study investigated the household secondary attack rate (HSAR) of patients with
coronavirus disease (COVID-19) during the omicron variant-dominant period. The HSAR of …

A steep rise in Omicron reinfection cases suggests that this variant has increased immune
evasion ability. To evaluate its antigenicity relationship with other variants, antisera from …

We examined the immune response in subjects previously infected with SARS-CoV2 and
infection-naïve 9 months after primary 2-dose COVID-19 mRNA vaccination and 3 months …

With the spread of the Coronavirus disease 2019 (COVID-19), missing learning
opportunities due to COVID-19 has been raised as a major concern for university education …

Despite numerous clinically available vaccines and therapeutics, aged patients remain at
increased risk for COVID-19 morbidity. Furthermore, various patient populations, including …

The SARS-CoV-2 pandemic has posed a challenge for correctional facilities worldwide.
People in such settings are more vulnerable to severe forms of infection and it is impossible …