Oropharyngeal Immunoprophylaxis With High Polyphenolic Olive Oil as Clinical Spectrum Mitigating Factor in COVID-19.

Immunomodulation of local immune response at the oropharyngeal mucosa can hypothetically activate mucosal immunity, which can difficult SARS-CoV-2 main immune evasion mechanisms in early stages of the disease and send an effective warning to the adaptive immune system. There are previous studies on immunotherapeutic management of upper respiratory tract infections with olive polyphenols. The investigators would like to study if participants following oromucosal immunomodulation with tiny quantities of high polyphenolic olive oil (early harvest olive oil) could have more possibilities to have less severe symptoms and a better outcome after SARS-CoV-2 infection.

Inclusion Criteria:Adult men and non-pregnant women were eligible if they had been in contact of recent COVID-19 diagnosed people and radomly allocated to olive oil group or not treatment at all group.Exclusion Criteria:Participation in other studies the 6 months before.Pregnant women.Inabilty to oral feeding.Diagnosis of any pathology able to increase risk.