Table 5.

Summary of environmental factors examined for an association with Cyclospora infection in humans, independent of outbreaks

Environmental factor categories (number of studies)	Environmental factors evaluated for a possible association (number of studies)
Produce (11)	Eating unwashed fruits or vegetables (4), eating uncooked vegetables, fruits or other food (3), eating fruits or vegetables (1), eating unwashed fruit (1), eating unwashed fruit or herbs abroad (1), source of fruits or vegetables (market vs. backyard garden) (1)
Water (21)	Source of drinking water (19), contact with water via swimming (6)
Soil (4)	Contact with soil (3), contact with soil contaminated with human faeces (1)
Other environmental factors (58)	Season (27), geographic location of residence (15), urban vs. rural residence (1), conditions inside the home (e.g. toilet in house) (11), contact with domestic animals/children (12), recent international travel (8), conditions outside the home (e.g. sewer system, crowding, rodents, livestock) (5), employed on a raspberry farm (2), employment with exposure to solid faecal waste (1), type of school attended (1), contact with/drinking breastmilk (child) (1)