Table 2.
Frequency of pathogenic intestinal parasites on the separation of producers and suppliers of food trade in Tabriz.
| Pollution trade unit | Total | Without infection | Infection | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Giardia | Ascaris | Entamoeba coli | H. nana | Entamoeba histolytica | Number of positive samples | % of positive samples | % of all samples | |||
| Supermarket | 880 | 842 | 23 | 4 | 7 | 2 | 2 | 38 | 22.1 (38/172) | 0.823 (38/4612) |
| Restaurant | 821 | 797 | 14 | 2 | 5 | 1 | 2 | 24 | 13.95 (24/172) | 0.52 (24/4612) |
| Sandwich and pizza | 709 | 676 | 21 | 2 | 8 | 1 | 1 | 33 | 19.2 (33/172) | 0.715 (33/4612) |
| Confectionery | 229 | 221 | 5 | — | 2 | — | 1 | 8 | 4.65 (8/172) | 0.173 (8/4612) |
| Bakery | 274 | 265 | 5 | 1 | 2 | 1 | — | 9 | 5.25 (9/172) | 0.195 (9/4612) |
| Butcher | 95 | 91 | 2 | 1 | — | 1 | 4 | 2.32 (4/172) | 0.086 (4/4612) | |
| Dairy | 403 | 383 | 13 | 1 | 5 | — | 1 | 20 | 11.65 (20/172) | 0.433 (20/4612) |
| Production workshop | 889 | 876 | 11 | — | 2 | — | — | 13 | 7.55 (13/172) | 0.281 (13/4612) |
| Ice cream and juice | 312 | 289 | 15 | — | 6 | 1 | 1 | 23 | 13.3 (23/172) | 0.498 (23/4612) |
| Sum | 4612 | 4440 | 109 | 10 | 38 | 6 | 9 | 172 | — | — |
| % of positive samples | — | — | 63.37 | 5.81 | 22.1 | 3.48 | 5.23 | 100 | 100 | — |
| % of all samples | 100 | 96.27 | 2.36 | 0.0021 | 0.0082 | 00.13 | 00.195 | 3.73 | — | 3.73 |