SARS-CoV-2 reinfection in a healthcare worker: First case in Portugal confirmed by viral genome sequencing

Abstract

Few reports of SARS-CoV-2 reinfection by antigenically similar variants are well documented. The interplay between natural acquired immunity, escape by emerging variants, and protective measures in the healthcare setting is considered in this description of the first phylogenetically confirmed SARS-CoV-2 reinfection in Portugal.