Retrospective Study on Anosmias and Ageusias Linked to Infection by Covid-19

Inclusion Criteria: * Major subject (≥18 years old) * Subject having had a loss of smell and / or taste that occurred during the period of the Covid-19 epidemic with or without other symptom (s) suggestive of a Covid infection -19 * Subject with suspected or confirmed Covid-19 infection * Subject taken care of by the ENT service * Subject not having expressed his opposition, after information, to the reuse of his data for the purposes of this research. Exclusion Criteria: * Subject having expressed opposition to participating in the study * Subject under guardianship or guardianship * Subject under safeguard of justice