Unfortunately re-infect in wild (8)
I believe the answer is:
frenetic
'wild' is the definition.
(I've seen this before)
'unfortunately re-infect' is the wordplay.
'unfortunately' is an anagram indicator (a bad or unfortunate spelling).
're'+'infect'='reinfect'
'reinfect' with letters rearranged gives 'FRENETIC'.
'in' is the link.
(Other definitions for frenetic that I've seen before include "Very distracted - reinfect (anag)" , "Hectic" , "disorder" , "Maniacal" , "Demented" .)