Inclusion Criteria:  Adult allowed to receive the Adsorbed COVID-19 (inactivated) Vaccine according to the Immunization National Plan. Informed consent form signed by participant. Show voluntary intention to participate in the study and availability throughout the study.  Exclusion Criteria:  History of severe allergic reactions or anaphylaxis to previous vaccines or allergy to any components of the study vaccine. History of fever (axillar temperature ≥ 37,8º C) 72 hours before the vaccine Be unavailable during the study period. Any other condition that, in the opinion of the principal investigator or his/her representative physician, could put the safety/rights of potential participants at risk or prevent them from complying with this protocol.