patients will be classified according by clinical presentation: a) non-hospitalised - positive diagnosis with persisting symptoms for at least 4 weeks from symptoms onset leading to medical review (a\&e, community covid hub) but not admission (treatment group), b) hospitalised, positive diagnosis, and with post-discharge, persistent symptoms for at least 4 weeks from symptoms onset (treatment group), c) hospitalised, positive diagnosis, and in convalescent phase in-hospital (prevention group). groups a \& b = target population for treatment of persisting symptoms post-covid i.e. long-covid; group c = target population for prevention of long covid. inclusion criteria: 1. virology pcr positive laboratory diagnosis and/or point of care test positive for covid-and/or 2. positive lateral flow test (confirmation from notes or by participant) and/or 3. positive covid antibody test 4. persistent symptoms for at least 4 weeks from symptoms onset (groups a \& b only) 5. presentation type - one of group a, b or c.

patients will be classified according by clinical presentation: a) non-hospitalised - positive diagnosis with persisting symptoms for at least 4 weeks from symptoms onset leading to medical review (a\&e, community covid hub) but not admission (treatment group), b) hospitalised, positive diagnosis, and with post-discharge, persistent symptoms for at least 4 weeks from symptoms onset (treatment group), c) hospitalised, positive diagnosis, and in convalescent phase in-hospital (prevention group). groups a \& b = target population for treatment of persisting symptoms post-covid i.e. long-covid; group c = target population for prevention of long covid. inclusion criteria: 1. virology pcr positive laboratory diagnosis and/or point of care test positive for covid-and/or 2. positive lateral flow test (confirmation from notes or by participant) and/or 3. positive covid antibody test 4. persistent symptoms for at least 4 weeks from symptoms onset (groups a \& b only) 5. presentation type - one of group a, b or c.

inclusion criteria: 1. virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, 2. within 6 months of diagnosis, 3. persistent symptoms for at least 4 weeks from symptoms onset (groups a \& b only) 4. presentation type - one of group a, b or c;

inclusion criteria: 1. virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, 2. within 6 months of diagnosis, 3. persistent symptoms for at least 4 weeks from symptoms onset (groups a \& b only) 4. presentation type - one of group a, b or c;

inclusion criteria: virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, within 6 months of diagnosis, persistent symptoms for at least 4 weeks from symptoms onset (groups a & b only) presentation type - one of group a, b or c;

inclusion criteria: virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, within 6 months of diagnosis, persistent symptoms for at least 4 weeks from symptoms onset (groups a & b only) presentation type - one of group a, b or c;

inclusion criteria: 1. virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, 2. within 6 months of diagnosis, 3. persistent symptoms for at least 4 weeks from symptoms onset (groups a & b only) 4. presentation type - one of group a, b or c;

inclusion criteria: 1. virology plymerase chain reaction (pcr) positive laboratory diagnosis of covid-19, 2. within 6 months of diagnosis, 3. persistent symptoms for at least 4 weeks from symptoms onset (groups a & b only) 4. presentation type - one of group a, b or c;