Pass away overseas after an illness (7)

I believe the answer is:

disease

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'illness' is the definition.
(I know that illness can be written as disease)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for disease that I've seen before include "Illness, malady" , "Ailment, malady" , "Seaside (anag) -- ailment" , "affection" , "Impairment of health" .)

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

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