26th April 2024

A 36-year-old woman, who works as a nurse, presents with a 3-day history of high fever, severe muscle aches, headache, and profound fatigue.

A 36-year-old woman, who works as a nurse, presents with a 3-day history of high fever, severe muscle aches, headache, and profound fatigue. She also experiences a dry cough and sore throat but no shortness of breath. 

Her temperature is 39.2°C, pulse rate 110 bpm regular, and BP 110/70 mmHg. Physical examination reveals mild dehydration and generalised myalgia. There are no signs of respiratory distress, and the lung examination is normal. 

Which one of the following is the most likely diagnosis?