Table 1.
Detection of any Enterobacteriaceae, and of these Salmonella enterica and Shigella sonnei bacteria in 3 ml or 3 grams of milk products and milk-containing infant food.
| Enterobacteriaceae positive % (n) | Salmonella enterica positive % (n) | Shigella sonnei positive % (n) | |
|---|---|---|---|
| Milk products | |||
| Baby formula, N = 1 | 0 (0) | 0 (0) | 0 (0) |
| Packaged long life milk, N = 276 | 12.0 (33) | 1.8 (5) | 0.7 (2) |
| Packaged fresh milk, N = 84 | 25.0 (21) | 2.4 (2) | 3.6 (3) |
| Unpackaged milk, N = 33 | 93.9 (31) | 39.4 (13) | 57.6 (19) |
| Overall, N = 394 | 21.6 (85) | 5.1 (20) | 6.1 (24) |
| Infant food | |||
| Porridge, N = 189 | 57.7 (109) | 5.8 (11) | 15.8 (30) |
| Milk only, N = 158 | 54.4 (86) | 8.9 (14) | 16.4 (26) |
| Milk tea, N = 35 | 48.6 (17) | 2.9 (1) | 17.1 (6) |
| Uncooked grain, N = 9 | 77.8 (7) | 0 (0) | 22.2 (2) |
| Cooked grain, N = 1 | 100 (1) | 0 (0) | 100 (1) |
| No record, N = 2 | 100 (2) | 50 (1) | 50 (1) |
| Overall, N = 394 | 56.4 (222) | 6.9 (27) | 16.8 (66) |
1
E. coli 0157: H7 phenotype not shown due to unconfirmed identity. Other bacteria types not shown due to low frequency (n < 5) of detection.