Inclusion Criteria:
* Participants who sign the informed consent forms for sample collection and data collection both anonymized and reported in CRF.
* Able to comply with all study procedures.
* Healthy Volunteers having no apparent disease.
* Adults, both genders, aged 18-85 years.
* Participants with no apparent motor or mental health abnormality.
* Participants having no major disabling mental or physical disability that would require hospitalization.
* Body weight above 50 kg if male, above 40 kg if female.
Exclusion Criteria:
* Any subject who did not sign the Informed Consent form.
* Any subject who, in the judgment of the Investigator, is likely to be non-compliant during the study, or unable to cooperate because of a language problem or poor mental development.
* Any subject in the exclusion period of a previous study according to applicable regulations.
* Any subject who cannot be contacted in case of emergency.
* Any subject who is the Investigator or any sub-investigator, research assistant, study coordinator, or other staff thereof, directly involved in the conduct of the protocol.
* Any subject with a disease that, in the judgement of the investigator, would interfere with the conduct of study or harm the safety of volunteer.
* Subjects with disabling disease or abnormal health status are excluded.
* Subjects aged below 18 years and older than 85 years are excluded.
* Pregnant, parturient and nursing women are excluded.
* Subjects deprived of their liberty by a judicial or administrative decision, protected adults and vulnerable persons are excluded.
* Subjects who are under legal protection or who are unable to express their consent are not included.
* Any subject who reports in the questionnaire of the screening period having one of the following diseases is excluded:
* Any psychiatric or neurodegenerative disease or neurologic disorder.
* Hypertension.
* Any cardiovascular disease.
* Any chronic inflammatory disease such as rheumatoid arthritis.
* Any cancer.
* Frequent headaches and/or migraine, recurrent nausea and/or vomiting.
* Any subject who did a blood donation, any volume, within 2 months before inclusion.
* Any subject who reports in the questionnaire of the screening period having medication(s) for one or more of the above diseases is excluded.
* Drug or alcohol abuse or smoking more than 10 cigarettes or equivalent.
* Subjects with no apparent disease and symptoms, but with unknown Covid-19 positivity are not excluded.
