- comprehensive non-pharmaceutical interventions
- virus variation
- nausea
- complications
- virus mutation
- pathology
- pathogen
- hypoxemia; low blood oxygen
- incipient symptoms
- fatigue
- lung abscess
- fever
- diarrhea
- septic shock
- dry cough
- shortness of breath; panting
- dyspnea; respiratory distress; breathing difficulties
- clinical picture
- clinical signs and symptoms
- upper respiratory tract infection (URTI)
