Nearly 1,300 cyclosporiasis cases have pushed Detroit vertical farm Planted Detroit to spotlight its indoor growing system as a way to reduce contamination risk from food and water.
Planted Detroit says it grows 35 varieties of greens entirely indoors, with staff using full protective gear, seeds tested for E. coli, Listeria and Salmonella, and municipal water put through particulate and UV filtration.
Health officials have not identified the source of the outbreak, though past cyclosporiasis cases have been linked to raspberries, fresh basil and bagged salad.
The farm ships produce Monday through Friday but says it cannot supply the whole region, urging consumers to wash produce thoroughly at home.