A Long-term Observational Study Evaluating the Presentation and Management of Acute Respiratory Tract Infections in Primary Care Across Europe

POS-ARI-PC AUDIT: Inclusion Criteria: Eligible patients will be of any age consulting (telephone, video, face-to-face) with a participating health care facility with: * Symptoms suggestive of an acute lower RTI with cough as predominant symptom and with illness duration less than 28 days, AND/OR * Symptoms suggestive of an acute upper RTI with sore throat and/or coryza as predominant symptom and with illness duration of less than 14 days AND/OR * Patients otherwise suspected of COVID-19, influenza or RSV. Exclusion Criteria: Patients will not be eligible for if they have withdrawn their consent for anonymous data collection for research by their health care facility. POS-ARI-PC CORE: Inclusion criteria: Eligible patients will be of any age consulting (telephone, video, face to face) with a participating primary health care facility with: * Symptoms suggestive of an acute lower respiratory infection with cough as the predominant symptom, with illness duration less than 28 days, AND/OR * Symptoms suggestive of an acute upper respiratory infection with sore throat and/or coryza as the predominant symptom, with illness duration of less than 14 days AND/OR * Other symptoms suggestive of COVID-19, Influenza, RSV AND * Participant or legal guardian(s) willing and able to provide informed consent and comply with study procedures Exclusion criteria: Patients will not be eligible if: * According to the judgement of the recruiting clinician, they will not be able comply with…