COVID-19 patients
It is challenging factors behind the virus crossing the species barrier and the definitive origin of the virus. Older age, lower oxygenation index and comorbidities on admission elevate death risk of COVID-19 patients.
Older age, lower index of oxygenation and admission comorbidities increase the risk of death among COVID-19 patients.
It is challenging to control increased death risk among COVID-19 patients who are in older age group, having lower oxygenation index.