- Adults
 - Healthcare workers
 - Hospital wide
 - Outpatient clinic
 - SARS-CoV-2
 - Post-COVID-19
 
Population: Adults
Individuals aged 18-64 years
- Adults
 - General population
 - Elderly
 - Paediatric
 - Hospital wide
 - Outpatient clinic
 - Primary care
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - General population
 - Elderly
 - Hospital wide
 - Outpatient clinic
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - Elderly
 - Paediatric
 - People at high risk of STIs
 - Men who have sex with men
 - Healthcare workers
 - Hospital wide
 - Infectious diseases unit
 - Monkeypox virus
 - Monkeypox virus infection
 - Pharmacological intervention
 - Vaccination
 - MVA-BN
 
- Adults
 - General population
 - Elderly
 - Hospital wide
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - General population
 - Elderly
 - SARS-CoV-2
 - Post-COVID-19
 - Non pharmacological intervention
 - Rehabilitation
 - Osteopathic manual treatment
 
- Adults
 - General population
 - Elderly
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - General population
 - Elderly
 - Paediatric
 - Hospital wide
 - Outpatient clinic
 - Intensive care unit
 - SARS-CoV-2
 - Acute SARS-CoV-2
 - Blood sample
 
- Adults
 - General population
 - Elderly
 - Outpatient clinic
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - General population
 - Elderly
 - SARS-CoV-2
 - Post-COVID-19
 - Pharmacological intervention
 - Probiotic
 
- Adults
 - Fragile population
 - Immunocompromised host
 - People living with HIV
 - Hospital wide
 - Outpatient clinic
 - SARS-CoV-2
 - Post-COVID-19
 
- Adults
 - General population
 - Elderly
 - Outpatient clinic
 - SARS-CoV-2
 - Post-COVID-19
 - Pharmacological intervention
 - Probiotic