18th February 2025

A traveller returning from Vietnam is seen in the Emergency Department complaining of abdominal cramps, night sweats and malaise a week after eating at a local market stall.

A traveller returning from Vietnam is seen in the Emergency Department complaining of abdominal cramps, night sweats and malaise a week after eating at a local market stall. On examination, they have a slight wheeze and a subsequent chest radiograph shows discrete bilateral perihilar shadows.

Investigations are as follows:

Eosinophils 1.7 (0.02 – 0.05)

What is the likely diagnosis?

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