Table 4. Proportion of positive containers by type—large barges.

	Large Barges	Medium Barges
	No. positive/ No. inspected (%)	No. positive/ No. inspected (%)
Tires	2/ 23 (8.70)	1/ 46 (2.17)
Floor puddles	25/ 396 (6.31)	0/ 91
Dishes (plates, mugs, plate holders)	1/ 20 (5)	0/ 13
Other (tanks/ drums, plastic containers)	0/80	0/ 78
Trash (discarded items)	0/ 6	1/5 (20)
Total	28/ 525 (5.33)	2/ 233 (0.86)

A container was considered to be positive if it contained Ae. aegypti at any immature stage (eggs, larvae, or pupae). On large barges significant differences were found in terms of floor puddles, dishes, and tires, and other container types (Fisher’s exact test p<0.05). On medium barges significant differences were detected between tires, trash, and other container types (Fisher’s exact test p<0.01).