1) High initial clinical suspicion by physician as SARI based on signs and symptoms (fever, cough, myalgias, fatigue, shortness of breath) followed by positive RT-PCR/ True NAAT/ Antigen test in Nasopharyngeal/ oropharyngeal swab for confirmation of COVID-19 diagnosis <br/ >OR <br/ >Referred from other center as COVID-19 + by RT-PCR/ True NAAT/ Antigen in NPS/OPS <br/ > <br/ >2) Moderate to severe COVID-19 symptoms <br/ >3) Willing to give informed written consent

1) High initial clinical suspicion by physician as SARI based on signs and symptoms (fever, cough, myalgias, fatigue, shortness of breath) followed by positive RT-PCR/ True NAAT/ Antigen test in Nasopharyngeal/ oropharyngeal swab for confirmation of COVID-19 diagnosis <br/ >OR <br/ >Referred from other center as COVID-19 + by RT-PCR/ True NAAT/ Antigen in NPS/OPS <br/ > <br/ >2) Moderate to severe COVID-19 symptoms <br/ >3) Willing to give informed written consent

1) High initial clinical suspicion by physician as SARI based on signs and symptoms (fever, cough, myalgias, fatigue, shortness of breath) followed by positive RT-PCR/ True NAAT/ Antigen test in Nasopharyngeal/ oropharyngeal swab for confirmation of COVID-19 diagnosis <br/ >OR <br/ >Referred from other center as COVID-19 + by RT-PCR/ True NAAT/ Antigen in NPS/OPS <br/ > <br/ >2) Moderate to severe COVID-19 symptoms <br/ >3) Willing to give informed written consent

1) High initial clinical suspicion by physician as SARI based on signs and symptoms (fever, cough, myalgias, fatigue, shortness of breath) followed by positive RT-PCR/ True NAAT/ Antigen test in Nasopharyngeal/ oropharyngeal swab for confirmation of COVID-19 diagnosis <br/ >OR <br/ >Referred from other center as COVID-19 + by RT-PCR/ True NAAT/ Antigen in NPS/OPS <br/ > <br/ >2) Moderate to severe COVID-19 symptoms <br/ >3) Willing to give informed written consent