Table 6.

Contamination frequency of fruits and vegetables by 3GC-resistant Gram-negative bacteria according to their distance from the soil.

Contact with soil	Number of samples	Number of positive samples	Frequency of contamination	CI 95%
Above
• Treea	76	9	12%	$\begin{array}{l}{[6.50-21.20\%]}^{\#}\\ {[4.65-11.35\%]}^{\#}\end{array}\}{[6.02-12.26\%]}^{\#}$
• Bushb	252	21	8%
At the soil surfacec	130	39	30%	[22.12–37.88%]$
In the soild	33	15	45%	[29.40–61.60%]$

^aFruits and vegetables considered harvested on trees: date, prickly pear, nectarine, nut, peach, pear, apple, grape.

^bFruits and vegetables considered harvested on bushes: chili, pepper, tomato.

^cFruits and vegetables considered harvested on the ground: chard, cucumber, lettuce, watermelon, celery, mint, parsley, courgette, fennel.

^dFruits and vegetables considered harvested from the soil: beet, garlic, carrot, onion, turnip.

^#,$Values followed by different signs were found significantly different by Chi² test (see Supplementary Table 3).