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Table 1 Durability of insecticide treated plastic sheeting 12- and 36-months post installation

From: Long-term acceptability, durability and bio-efficacy of ZeroVector® durable lining for vector control in Papua New Guinea

Site Time (months) HH no Installation status no (%) DL integrity no (%)a Fixture integrity no (%)a
Intact Modified Removed Holes Abrasions Scorched Intact Looseb Failedc
Islands village 12 10 10 (100) 0 0 6 (60) 7 (70) 0 5 (50) 4 (40) 1 (10)
36 10 4 (40) 0 6 (60) 2 (5) 2 (50) 1 (25) 2 (50) 2 (50) 0
Lowlands village 12 10 8 (80) 1 (10) 1 (10) 4 (45) 6 (67) 0 4 (45) 5 (55) 0
36 9 3 (33) 1 (11) 5 (56) 4 (100) 3 (75) 0 2 (50) 2 (50) 0
Highlands village 12 8 7 (88) 1 (12) 0 6 (75) 5 (63) 1 (13) 4 (50) 4 (50) 0
36 9 5 (56) 1 (11) 3 (33) 6 (100) 3 (50) 5 (83) 3 (50) 3 (50) 0
Highlands urban 12 9 7 (78) 1 (11) 1(11) 2 (25) 4 (50) 0 6 (75) 2 (25) 0
36 10 3 (30) 0 7 (70) 1 (33) 1 (33) 0 2 (67) 1 (33) 0
Overall 12 37 32 (86) 3 (8) 2 (5) 18 (51) 22 (63) 1 (3) 19 (54) 15 (43) 1 (3)
36 38 15 (39) 2 (6) 21 (55) 13 (76) 9 (53) 6 (35) 9 (53) 8 (47) 0
  1. aExcludes households in which DL was removed
  2. bDefined as loose or missing fixtures (nails) or slackness in the DL to the degree that the material may be pulled away from the wall by a distance of at least 50 cm
  3. cDefined as DL no longer affixed to one or more parts of the interior wall due to a failed fixture (as opposed to deliberate removal)