Table 1.
The monthly isolation rate of the bacterial pathogens.
| Pathogens | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Salmonella | Enteritidis | 3 | 2 | 4 | 3 | 5 | 10 | 37 | 14 | 14 | 5 | 5 | 5 | 107 |
| Typhimurium | 1 | 3 | 1 | 4 | 12 | 8 | 7 | 8 | 5 | 0 | 3 | 3 | 55 | |
| others | 13 | 10 | 14 | 12 | 17 | 33 | 57 | 45 | 61 | 27 | 18 | 7 | 314 | |
| Subtotal | 17 | 15 | 19 | 19 | 34 | 51 | 101 | 67 | 80 | 32 | 26 | 15 | 476 | |
| Escherichia coli | EHEC | 0 | 1 | 0 | 3 | 2 | 8 | 12 | 5 | 3 | 2 | 2 | 0 | 38 |
| ETEC | 1 | 1 | 0 | 6 | 2 | 8 | 12 | 19 | 19 | 5 | 1 | 5 | 79 | |
| EAEC | 15 | 10 | 11 | 6 | 3 | 7 | 12 | 18 | 22 | 11 | 10 | 14 | 139 | |
| EPEC | 26 | 13 | 19 | 14 | 19 | 45 | 111 | 83 | 80 | 42 | 28 | 35 | 515 | |
| EIEC | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | 6 | |
| Subtotal | 44 | 25 | 30 | 29 | 26 | 68 | 148 | 127 | 125 | 60 | 41 | 54 | 777 | |
| Vibrio parahaemolyticus | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 4 | 8 | 1 | 7 | 1 | 23 | |
| Shigella spp. | 3 | 1 | 0 | 0 | 0 | 3 | 0 | 1 | 0 | 0 | 3 | 5 | 16 | |
| Campylobacter spp. | 6 | 5 | 3 | 2 | 14 | 27 | 59 | 52 | 12 | 9 | 15 | 11 | 215 | |
| Clostridium perfringens | 82 | 59 | 60 | 64 | 41 | 31 | 35 | 33 | 12 | 42 | 32 | 17 | 508 | |
| Staphylococcus aureus | 93 | 66 | 79 | 81 | 86 | 88 | 120 | 124 | 127 | 85 | 91 | 104 | 1,144 | |
| Bacillus cereus | 17 | 9 | 8 | 25 | 22 | 39 | 60 | 56 | 42 | 32 | 19 | 27 | 356 | |
| Listeria monocytogenes | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Yersinia enterocolitica | 0 | 1 | 0 | 4 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 10 | |
| Isolations (n) | 262 | 181 | 200 | 225 | 225 | 307 | 524 | 466 | 406 | 261 | 235 | 224 | 3,526 | |
| Specimens (n) | 1,503 | 1,049 | 1,166 | 1,361 | 1,080 | 1,242 | 1,608 | 1,284 | 1,313 | 976 | 1,036 | 1,268 | 14,886 | |
| Isolation rate (%) | 17.4 | 17.3 | 17.2 | 16.5 | 20.8 | 24.7 | 32.6 | 36.3 | 30.9 | 26.7 | 22.7 | 17.7 | 23.7 | |
EAEC = Enteroaggregative E. coli; EHEC = Enterohaemorrhagic E. coli; EIEC = Enteroinvasive E. coli; EPEC = Enteropathogenic E. coli; ETEC = Enterotoxigenic E. coli.