Figure 4

Experimental set-up in the Ifakara Tunnel Test (ITT). Ifakara Tunnel situated at Bagamoyo Research Training Centre (BRTC) in Kingani, Bagamoyo. The tunnel is a 50 m long, 3 m wide and 2.1 m high steel tube frame construction upon a concrete base surrounded by a water channel and beneath a beamed wooden frame supporting a corrugated steel roof (A). Net covered tunnel divided into 10 individual compartments containing bed and adjustable steel net frame (B). Experimental set up for Ifakara Tunnel Test. A human volunteer will sleep beneath the LLIN from 21.00 hrs to 06.00 hrs. Anopheles gambiae mosquitoes will be released from the holding cages by raising a cage from its wooden base (arrow) using a nylon string (C). At the end of the experiment, all mosquitoes within each of the compartments will be removed with a Prokopack (D).