The only patients invited will be those admitted to a collaborating hospital, no wider recruitment is expected. 1. Adults (age =18 years, which allows consent) 2. Recently hospitalized (or already in hospital) with laboratory-confirmed COVID 3. Not expected to be transferred within 72 hours 4. With, in the view of their doctors, no contra-indication to any potentially relevant study drug

The only patients invited will be those admitted to a collaborating hospital, no wider recruitment is expected. 1. Adults (age =18 years, which allows consent) 2. Recently hospitalized (or already in hospital) with laboratory-confirmed COVID 3. Not expected to be transferred within 72 hours 4. With, in the view of their doctors, no contra-indication to any potentially relevant study drug