The vector which transmits trench fever -
Trench fever is caused by Rickettsia quintana. The vector being lice. Other diseases transmitted by lice include epidemic typhus, dermatitis, relapsing fever. REFERENCE: PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE, 25TH EDITION, PG NO. 837
Tick
Mite
Flea
Louse
Environment and health