Age > 18 years <br/ >All sexes <br/ >Case definitions for inclusion in the study will include mild, moderately severe and severe cases as defined in the Guidance on appropriate treatment of suspect/confirmed case of COVI19 issued by Ministry of Health and Family Welfare, Govt of India on 07 Apr 2020. <br/ > Mild: Cases presenting with fever and/or upper respiratory tract illness (Influenza like Illness, ILI) <br/ > Moderate: Pneumonia with no signs of severe disease (Respiratory Rate 15 to 30/minute, SpO2 90%-94%). <br/ > Severe: Severe Pneumonia (with respiratory rate â?¥30/minute and/or SpO2 < 90% in room air) or ARDS or septic shock <br/ > <br/ >Laboratory confirmed SARS CoV-2 infection within last 10d or SARS CoV-2 test result pending with a high clinical suspicion as defined by: <br/ >Cough of <10d duration <br/ >Bilateral pulmonary infiltrates on chest X Ray / CT scan or new hypoxaemia defined as SpO2 <94% on room air <br/ >No alternative explanation for respiratory symptoms <br/ >Scheduled for admission or enrolled within 48h of hospital admission <br/ >

Age > 18 years <br/ >All sexes <br/ >Case definitions for inclusion in the study will include mild, moderately severe and severe cases as defined in the Guidance on appropriate treatment of suspect/confirmed case of COVI19 issued by Ministry of Health and Family Welfare, Govt of India on 07 Apr 2020. <br/ > Mild: Cases presenting with fever and/or upper respiratory tract illness (Influenza like Illness, ILI) <br/ > Moderate: Pneumonia with no signs of severe disease (Respiratory Rate 15 to 30/minute, SpO2 90%-94%). <br/ > Severe: Severe Pneumonia (with respiratory rate â?¥30/minute and/or SpO2 < 90% in room air) or ARDS or septic shock <br/ > <br/ >Laboratory confirmed SARS CoV-2 infection within last 10d or SARS CoV-2 test result pending with a high clinical suspicion as defined by: <br/ >Cough of <10d duration <br/ >Bilateral pulmonary infiltrates on chest X Ray / CT scan or new hypoxaemia defined as SpO2 <94% on room air <br/ >No alternative explanation for respiratory symptoms <br/ >Scheduled for admission or enrolled within 48h of hospital admission <br/ >

Age > 18 years <br/ >All sexes <br/ >Case definitions for inclusion in the study will include mild, moderately severe and severe cases as defined in the Guidance on appropriate treatment of suspect/confirmed case of COVI19 issued by Ministry of Health and Family Welfare, Govt of India on 07 Apr 2020. <br/ > Mild: Cases presenting with fever and/or upper respiratory tract illness (Influenza like Illness, ILI) <br/ > Moderate: Pneumonia with no signs of severe disease (Respiratory Rate 15 to 30/minute, SpO2 90%-94%). <br/ > Severe: Severe Pneumonia (with respiratory rate â?¥30/minute and/or SpO2 < 90% in room air) or ARDS or septic shock <br/ > <br/ >Laboratory confirmed SARS CoV-2 infection within last 10d or SARS CoV-2 test result pending with a high clinical suspicion as defined by: <br/ >Cough of <10d duration <br/ >Bilateral pulmonary infiltrates on chest X Ray / CT scan or new hypoxaemia defined as SpO2 <94% on room air <br/ >No alternative explanation for respiratory symptoms <br/ >Scheduled for admission or enrolled within 48h of hospital admission <br/ >

Age > 18 years <br/ >All sexes <br/ >Case definitions for inclusion in the study will include mild, moderately severe and severe cases as defined in the Guidance on appropriate treatment of suspect/confirmed case of COVI19 issued by Ministry of Health and Family Welfare, Govt of India on 07 Apr 2020. <br/ > Mild: Cases presenting with fever and/or upper respiratory tract illness (Influenza like Illness, ILI) <br/ > Moderate: Pneumonia with no signs of severe disease (Respiratory Rate 15 to 30/minute, SpO2 90%-94%). <br/ > Severe: Severe Pneumonia (with respiratory rate â?¥30/minute and/or SpO2 < 90% in room air) or ARDS or septic shock <br/ > <br/ >Laboratory confirmed SARS CoV-2 infection within last 10d or SARS CoV-2 test result pending with a high clinical suspicion as defined by: <br/ >Cough of <10d duration <br/ >Bilateral pulmonary infiltrates on chest X Ray / CT scan or new hypoxaemia defined as SpO2 <94% on room air <br/ >No alternative explanation for respiratory symptoms <br/ >Scheduled for admission or enrolled within 48h of hospital admission <br/ >