TABLE 1.
Number of samples and incidence of Salmonella spp. throughout the period of study per type of sample
| Yr | Mo | No. of samples (% positive for Salmonella spp.)
|
Total (%) | ||||
|---|---|---|---|---|---|---|---|
| Stream water | Seawater | Sewage water | Mollusks | Puddles | |||
| 2004 | October | 0 | 1 (0) | 14 (0) | 0 | 0 | 15 (0) |
| November | 24 (8.3) | 69 (0) | 4 (0) | 11 (0) | 0 | 108 (1.8) | |
| December | 8 (0) | 32 (0) | 0 | 8 (0) | 0 | 48 (0) | |
| Total | 32 (6.3) | 102 (0) | 18 (0) | 19 (0) | 0 | 171 (1.2) | |
| 2005 | January | 25 (20) | 78 (7.7) | 3 (60) | 6 (16.7) | 0 | 114 (13.2) |
| February | 12 (0) | 31 (0) | 3 (0) | 2 (0) | 0 | 48 (0) | |
| March | 0 | 0 | 0 | 0 | 0 | 0 | |
| April | 12 (8.3) | 46 (4.3) | 1 (100) | 0 | 0 | 59 (14.8) | |
| May | 3 (0) | 16 (0) | 0 | 0 | 0 | 19 (0) | |
| June | 20 (5) | 90 (2.2) | 4 (25) | 0 | 0 | 114 (3.5) | |
| July | 8 (0) | 39 (0) | 1 (100) | 0 | 1 (0) | 49 (2) | |
| August | 9 (11.1) | 60 (3.3) | 2 (0) | 0 | 0 | 71 (4.2) | |
| September | 11 (0) | 79 (0) | 1 (0) | 0 | 0 | 91 (0) | |
| October | 13 (7.7) | 73 (0) | 1 (100) | 0 | 0 | 87 (2.3) | |
| November | 8 (12.5) | 34 (0) | 5 (20) | 0 | 0 | 47 (4.2) | |
| December | 4 (0) | 18 (0) | 0 | 4 (0) | 0 | 26 (0) | |
| Total | 125 (8) | 564 (2.1) | 23 (34.8) | 12 (8.3) | 1 (0) | 725 (4.3) | |
| 2006 | January | 8 (50) | 33 (0) | 4 (25) | 0 | 0 | 45 (11.1) |
| February | 14 (7.15) | 52 (0) | 10 (20) | 11 (0) | 11 (9.1) | 98 (3.1) | |
| March | 12 (16.6) | 63 (12.7) | 5 (0) | 18 (22.2) | 2 (0) | 100 (14) | |
| April | 9 (22.2) | 33 (6) | 2 (50) | 6 (0) | 3 (66.7) | 53 (13.2) | |
| May | 7 (28.6) | 52 (0) | 1 (0) | 2 (0) | 0 | 62 (3.2) | |
| June | 6 (0) | 46 (0) | 2 (0) | 0 | 0 | 54 (0) | |
| July | 3 (0) | 17 (0) | 3 (0) | 0 | 0 | 23 (0) | |
| Total | 59 (18.6) | 296 (3.4) | 27 (11.1) | 37 (10.8) | 16 (18.75) | 435 (7.1) | |
| Total | 216 (10.6) | 962 (2.3) | 68 (16.2) | 68 (7.4) | 17 (17.6) | 1,331 (4.8) | |