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They can be used to detect and follow-up patients. Despite several on-going clinical trials, the most reliable and advisable treatment option available till date is olfactory training.The role of tracheotomy during the pandemic remains to be determined for severe COVID-19 pneumonia. We evaluated the effect of tracheotomy on prognostic markers and assessed 4 weeks survival in terms of clinical and biochemical characteristics of patients and time and type (open or percutaneous) of the operation. We performed a retrospective study consideri