Table 3 Distribution of enterotoxin and emetic toxin genes in B. cereus senso lato isolated from dairy farm and milk product
Toxigenic genes | Number of strains (%)a positive for target gene(s) | ||||
|---|---|---|---|---|---|
Soil (n = 30) | Raw milk (n = 24) | Nunu (n = 18) | Woagashie (n = 24) | Total (n = 96) | |
NHE gene complexes | |||||
  nheA | 3 (10) | 1 (4) | 0 (0) | 2 (8) | 6 (6) |
  nheB | 1 (3) | 1 (4) | 0 (0) | 0 (0) | 2 (2) |
  nheC | 1 (3) | 0 (0) | 1 (6) | 2 (8) | 4 (4) |
  nheA + nheB | 2 (7) | 2 (8) | 0 (0) | 1 (4) | 5 (5) |
  nheA + nheC | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
  nheB + nheC | 2 (7) | 3 (13) | 4 (22) | 4 (17) | 13 (14) |
  nheA + nheB + nheC | 19 (63) | 15 (63) | 9 (50) | 15 (63) | 58 (60) |
 None detected | 2 (7) | 2 (8) | 4 (22) | 0 (0) | 8 (8) |
HBL gene complexes | |||||
  hblA | 4 (13) | 4 (17) | 1 (6) | 2 (8) | 11 (11) |
  hblC | 1 (3) | 5 (21) | 3 (17) | 1 (4) | 10 (10) |
  hblD | 5 (17) | 2 (8) | 2 (11) | 7 (29) | 16 (17) |
  hblA + hblC | 0 (0) | 3 (13) | 0 (0) | 0 (0) | 3 (3) |
  hblA + hblD | 6 (20) | 2 (8) | 1 (6) | 3 (13) | 12 (13) |
  hblC + hblD | 1 (3) | 3 (13) | 0 (0) | 4 (17) | 8 (8) |
  hblA + hblC + hblD | 5 (17) | 1 (4) | 4 (22) | 2 (8) | 12 (13) |
None detected | 8 (27) | 4 (17) | 7 (39) | 5 (21) | 24 (25) |
Other genes | |||||
  cytK | 9 (30) | 21 (88) | 18 (100) | 24 (100) | 72 (75) |
  entFM | 19 (63) | 17 (71) | 15 (83) | 13 (54) | 64 (67) |
  Ces | 0 (0) | 5 (21) | 1 (6) | 3 (13) | 9 (9) |