inclusion criteria: * age ≥ 18 * covid-19 confirmed cases (reverse transcription polymerase chain reaction (rt-pcr) confirmed). * tympanic temperature of ≥37.5 and at least one of the following: cough, sputum production, nasal discharge, myalgia, headache or fatigue) on admission. * time of onset of the symptoms should be acute ( days ≤ 10). * spo2 ≤ 93% * respiratory rate ≥ 22

inclusion criteria: * age ≥ 18 * covid-19 confirmed cases (reverse transcription polymerase chain reaction (rt-pcr) confirmed). * tympanic temperature of ≥37.5 and at least one of the following: cough, sputum production, nasal discharge, myalgia, headache or fatigue) on admission. * time of onset of the symptoms should be acute ( days ≤ 10). * spo2 ≤ 93% * respiratory rate ≥ 22

inclusion criteria: - age ≥ 18 - covid-19 confirmed cases (reverse transcription polymerase chain reaction (rt-pcr) confirmed). - tympanic temperature of ≥37.5 and at least one of the following: cough, sputum production, nasal discharge, myalgia, headache or fatigue) on admission. - time of onset of the symptoms should be acute ( days ≤ 10). - spo2 ≤ 93% - respiratory rate ≥ 22

inclusion criteria: - age ≥ 18 - covid-19 confirmed cases (reverse transcription polymerase chain reaction (rt-pcr) confirmed). - tympanic temperature of ≥37.5 and at least one of the following: cough, sputum production, nasal discharge, myalgia, headache or fatigue) on admission. - time of onset of the symptoms should be acute ( days ≤ 10). - spo2 ≤ 93% - respiratory rate ≥ 22