25th May 2025

A 25-year-old female presents with a two-week history of low-grade fever, runny nose, and myalgia.

A 25-year-old female presents with a two-week history of low-grade fever, runny nose, and myalgia. She has no known past medical history. She developed central chest pain worse on inspiration one day prior to the presentation. ECG shows features consistent with acute pericarditis. What is the most likely aetiology?

Select the SINGLE most appropriate option from the list below. Select ONE option only.