Fungal spores found in Hanoi diabetic (5)

I believe the answer is:

oidia

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'fungal spores' is the definition.
The definition suggests a plural noun which matches the answer.

'in hanoi diabetic' is the wordplay.
'in' indicates a hidden word.
'OIDIA' can be found hidden inside 'hanoi diabetic'.

'found' acts as a link.

Can you help me to learn more?

(Other definitions for oidia that I've seen before include "Diseases" , "Stages of fungi" .)

I've seen this clue in The Independent.

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