Rosy-cheeked as illness cast off (7)

I believe the answer is:

flushed

'rosy-cheeked' is the definition.
('flushed' can be a synonym of 'rosy-cheeked')

'illness cast off' is the wordplay.
'illness' becomes 'flu' (flu is a kind of health problem).
'cast off' becomes 'shed' ('shed' can be a synonym of 'cast off').
'flu'+'shed'='FLUSHED'

'as' acts as a link.

I've seen this clue in The Independent.

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