4th September 2020

A 46-year-old woman presents with a dry cough, shortness of breath, and in the last 2 days diarrhoea and vomiting

A 46-year-old woman presents with a dry cough, shortness of breath, and in the last 2 days diarrhoea and vomiting. The cough and breathlessness started around 3 weeks ago. She has also felt very fatigued during this time. She is normally fit and well. Her observations are heart rate 70 bpm, respiratory rate 22 bpm, blood pressure 120/80 mmHg, temperature 37.9°C, O₂ saturation 97%. She has crackles over both lung bases. Blood results show lymphopenia and hyponatraemia.

For the patient above, please select the SINGLE most likely causative organism. Select ONE option from the list above.