Transport bill not bad per person infected (5,5)
I believe the answer is:
beach buggy
'transport' is the definition.
(I've seen this before)
'bill not bad per person infected' is the wordplay.
'not' is a deletion indicator.
'bad' becomes 'ill' (associated in meaning).
'per person' becomes 'each' (eg 'one each' means 'one per person').
'infected' becomes 'buggy' (bug can mean an infection).
'bill' with 'ill' removed is 'b'.
'b'+'each'+'buggy'='BEACH BUGGY'
(Other definitions for beach buggy that I've seen before include "Seaside transport" , "carrier in bay perhaps?" , "Motor vehicle for the seashore" , "open car" , "Vehicle to be driven on sand" .)