Predictors of anti-SARS-CoV-2 seropositivity: An Egyptian population-based study

Abstract Predictors for seropositivity were: being a non-smoker, having blood group A, having a history of COVID-19 infection, being vaccinated against COVID-19, higher crowding index, anosmia and/or ageusia, and fever. “Being a healthcare worker” and “being obese/overweight” were significant predictors of seropositivity among working participants. There was a positive correlation between the titres of anti-spike and anti-nucleocapsid. Age was significantly correlated with anti-S titer, while anti-N was significantly correlated with the number of protective measures applied by the participants. Both