Dengue's hit badly. Bless you! (10)

I believe the answer is:

gesundheit

I'm a little stuck... Click here to teach me more about this clue!

'bless you' is the definition.
I can't tell whether this defines the answer.

'dengue's hit badly' is the wordplay.
'badly' indicates anagramming the letters (letters in the wrong order).
'dengues'+'hit'='dengueshit'
'dengueshit' is an anagram of 'GESUNDHEIT'.

Can you help me to learn more?

(Other definitions for gesundheit that I've seen before include "Saxon good health" , "bless you!" .)

I've seen this clue in the Sydney Morning Herald.

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