Prospective Evaluation of Antibodies Levels Variation Against SARS-CoV-2 in a Vaccinated Population of the Metropolitan Area of Valle de Aburra . Pilot Prospective Cohort.

After being informed about the study, all patients giving written informed consent will undergo a serial IgM -IgG COVID-19 antibodies blood test and SARS-Cov-2 PCR by nasopharingeal swab, that will be taken at the beginning of the study and mensually for two months. During the study will be done an active search for SARS-CoV-2 infections in the vaccinated people cohort, and if it is posible to characterize the variant of SARS-CoV-2 in participants previously vaccinated against this pathogen. The main objective of this study is to describe the pattern of antibodies blood test based in the type of vaccine and correlated the pattern of antibodies SARS-Cov-2 levels in a population of Valle de Aburrá.