Deadly virus hard to shift around centre of Vienna (6)

I believe the answer is:

hendra

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'deadly virus' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'hard to shift around centre of vienna' is the wordplay.
'to shift' indicates an anagram.
'around' indicates putting letters inside.
'centre of' indicates the central letters.
The middle letters of 'vienna' are 'en'.
'hard' anagrammed gives 'hdra'.
'hdra' going around 'en' is 'HENDRA'.

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