1st August 2023

A 48 year old nurse from the Philippines presents with new-onset confusion and high fevers 10 days after emigrating to begin working in the UK.

A 48 year old nurse from the Philippines presents with new-onset confusion and high fevers 10 days after emigrating to begin working in the UK. A vaccination record is not available. An MRI head scan demonstrates peri mesencephalic signal change in keeping with a meningoencephalitis diagnosis. He has multiple mosquito bites but no encounters with livestock or wildlife.

Which virus is the most likely cause?

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