Not a threat to health, good in part of Africa (6)
I believe the answer is:
benign
'not a threat to health' is the definition.
I can't tell whether this definition defines the answer.
'good in part of africa' is the wordplay.
'good' becomes 'g' (abbreviation).
'in' is an insertion indicator.
'part of africa' becomes 'benin' ('Benin' is part of 'africa').
'g' placed inside 'benin' is 'BENIGN'.
Can you help me to learn more?
(Other definitions for benign that I've seen before include "Salubrious" , "Kindly, pleasant" , "Favourable" , "Not progressive or dangerous to health" , "Meaning no harm" .)