Individuals aged above 18 years old, male or female, not infected with SARS-CoV-2 who exercise professional activities in the Health Units of the study, Agreement to participate in the study by signing the informed consent form

Individuals aged above 18 years old, male or female, not infected with SARS-CoV-2 who exercise professional activities in the Health Units of the study, Agreement to participate in the study by signing the informed consent form