inclusion criteria: * a diagnosis of covid-19, based on: (a) a compatible clinical presentation with a positive laboratory test for sars-cov-2, or (b) considered by the primary team to be a person under investigation undergoing testing for covid-19 with a high clinical probability, in addition to compatible pulmonary infiltrates on chest x-ray (bilateral, intersticial or ground glass opacities) or chest ct. * able to provide informed consent. * fewer than 14 days since symptom onset.

inclusion criteria: * a diagnosis of covid-19, based on: (a) a compatible clinical presentation with a positive laboratory test for sars-cov-2, or (b) considered by the primary team to be a person under investigation undergoing testing for covid-19 with a high clinical probability, in addition to compatible pulmonary infiltrates on chest x-ray (bilateral, intersticial or ground glass opacities) or chest ct. * able to provide informed consent. * fewer than 14 days since symptom onset.

inclusion criteria: - a diagnosis of covid-19, based on: (a) a compatible clinical presentation with a positive laboratory test for sars-cov-2, or (b) considered by the primary team to be a person under investigation undergoing testing for covid-19 with a high clinical probability, in addition to compatible pulmonary infiltrates on chest x-ray (bilateral, intersticial or ground glass opacities) or chest ct. - able to provide informed consent. - fewer than 14 days since symptom onset.

inclusion criteria: - a diagnosis of covid-19, based on: (a) a compatible clinical presentation with a positive laboratory test for sars-cov-2, or (b) considered by the primary team to be a person under investigation undergoing testing for covid-19 with a high clinical probability, in addition to compatible pulmonary infiltrates on chest x-ray (bilateral, intersticial or ground glass opacities) or chest ct. - able to provide informed consent. - fewer than 14 days since symptom onset.