Background Knowing the seroprevalence of SARS-CoV-2 IgG antibodies across geographic
regions before vaccine administration is one key piece of knowledge to achieve herd …

Unraveling the long-term kinetics of antibodies to SARS-CoV-2 and the individual
characteristics influencing it, including the impact of pre-existing antibodies to human …

Executive summary The social determinants of health are the conditions in which people are
born, grow, work, live, and age and people's access to power, money and resources. The …

Background Prospective population-based studies investigating multiple determinants of pre-
vaccination antibody responses to SARS-CoV-2 are lacking. Methods We did a prospective …

Objectives: Hospital outbreaks of SARS-CoV-2 infection are dreaded but preventable
catastrophes. We review the literature to examine the pattern of SARS-CoV-2 transmission …

Background Inequality is rife throughout South Africa. The first wave of COVID-19 may have
affected people in lower socioeconomic groups worse than the affluent. The SARS-CoV-2 …

The psychosocial impact of the work environment during the COVID-19 pandemic on health
professionals is a growing issue. The present study examined specific psychosocial work …

Background The kinetics of the antibodies against severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) needs to be evaluated since long-term duration of antibody …

In 2020, we reported a low seroprevalence of N-specific antibodies in 4147 health care
workers (HCWs) at a frontline hospital in Tokyo, Japan. In Japan, a vaccine campaign was …

The immune response after SARS-CoV-2 vaccine administration appears to be
characterized by high inter-individual variation, even in SARS-CoV-2 positive subjects, who …