Alot of our winter time veggies and fruits are grown out side the U.S. where sewer treatment plants are few and far ibetween. Alot the crops are water with contaminated water and will cause zoonotic infections like respiratory illness , asthma ,allergies, influenza etc.,(flu's and cold can be transfered from one person to another).
Another source of fecal contamination is the cat doo in the garden , gardens make a great cat box and cat dog doo under trees or watering garden with contaminated water(people throwing doo in water etc.) can also contaminate your garden. Rat contamination is common after rodents eat dog food then potty in garden.
Best thing is to only eat U.S. grown fruits and veggies -- avoid banana's and juice from outside sources-- also avoid crops grown in drought areas of the U.S., those can be watered with contaminated water also.
Cure: the cure is one tablespoon of clove powder in a bowl of hot cereal while the cereal is cooking. Its spicy hot but worth it, I spat out a grapefruit sized flem the first time I used the clove powder- it will push out all the zoonotic bacterial infection so stay by a bathroom. DON'T EAT FRUITS OR VEGGIES GROWN OUTSIDE THE U.S.!!!!