Breathalyzer could replace PCR for respiratory infections

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Eligibility Criteria \* * Inclusion Criteria \* : * Age ≥ 18 years old * Having signed a written informed consent * With clinical signs of acute respiratory infection, or with a clinical presentation of acute community-acquired pneumonia, nasopharyngitis, angina or laryngitis (except for healthy patients) * Exclusion Criteria \* : * Healthy volunteers: * Age: \< 18 years * Alcohol consumption less than 12 hours * Person with co-morbidities such as chronic respiratory failure, type II diabetes, cancerous processes, chronic liver disease, chronic kidney disease * Clinical signs of acute respiratory infection * Persons who are unable to blow into exhaled-air analysis devices (in accordance with instructions for use) * Persons under legal protection * Pregnant women, women in labor or nursing mothers * Persons deprived of their liberty by judicial or administrative decision * Persons under psychiatric care * Persons admitted to a health or social institution for purposes other than research * Adults under legal protection (guardianship, curatorship) * Persons not affiliated to a social security scheme or beneficiaries of a similar scheme * Patients with respiratory symptoms * Age: \< 18 years * Patients whose symptoms have been present for more than 7 days * Persons unable to blow into the device for breath analysis (in accordance with the operating instructions) * Patients suffering from cystic fibrosis * Patients with severe chronic respiratory insufficiency requiring long-term oxygen therapy or NIV (non-invasive ventilation), excluding CPAP (Continuous Positive Airway Pressure) for sleep apnea * Patients under legal protection * Pregnant women, women in labor or nursing mothers * Persons deprived of their liberty by judicial or administrative decision * Persons under psychiatric care * Persons admitted to a health or social institution for purposes other than research * Adults under legal protection (guardianship, curatorship) * Persons not affiliated to a social security scheme or beneficiaries of a similar scheme