inclusion criteria: - no self-medication with chloroquine, hydroxychloroquine or antivirals - covid-19 negative diagnosis confirmed by "rapid test" and "pcr test" (polymerase chain reaction test) - no clinical symptoms suggestive of covid-19 - having given written consent for their participation in the study

inclusion criteria: - no self-medication with chloroquine, hydroxychloroquine or antivirals - covid-19 negative diagnosis confirmed by "rapid test" and "pcr test" (polymerase chain reaction test) - no clinical symptoms suggestive of covid-19 - having given written consent for their participation in the study