A 63‐year‐old woman developed chills, vomiting and diarrhoea the day after returning from 2 months' travel in South East Europe. Travel included a Danube River cruise trip and time in Serbia, Croatia, Germany, Austria, Slovakia and Hungary. She visited rural areas and sustained mosquito bites, but reported no unpasteurised food consumption, animal contact or bites. Pre‐travel consultation was not undertaken. Past medical history included follicular lymphoma in remission, with rituximab‐induced hypogammaglobulinaemia.
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