Figure 1Seasonal isolation rate patterns. (A) Gram-negative bacterial pathogens and (B) Gram-positive bacterial pathogens are shown.
Figure 2Isolation rates. (A) Gram-negative and (B) Gram-positive bacterial pathogens on the basis of age are shown.
Table 1The 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 |
Table 2The isolation rate of the bacterial pathogens by age and sex.
|
|
No. of specimens (n = 14,886) |
No. of isolates (n = 3,526) |
Salmonella spp. (n = 476) |
Pathogenic Escherichia coli (n = 777) |
Shigella spp. (n = 13) |
Vibrio parahaemolyticus (n = 26) |
Campylobacter spp. (n = 215) |
Clostridium perfringens (n = 508) |
Staphylococcus aureus (n = 1,144) |
Bacillus cereus (n = 356) |
Listeria monocytogenes (n = 1) |
Yersinia enterocolitica (n = 10) |
Age (y) |
0–9 |
6,703 |
1,570 |
249 |
376 |
4 |
0 |
47 |
132 |
606 |
156 |
0 |
0 |
10–19 |
951 |
263 |
47 |
57 |
1 |
1 |
49 |
34 |
57 |
17 |
0 |
0 |
20–29 |
512 |
109 |
5 |
29 |
0 |
2 |
33 |
15 |
19 |
6 |
0 |
0 |
30–39 |
535 |
72 |
12 |
19 |
0 |
1 |
9 |
3 |
21 |
7 |
0 |
0 |
40–49 |
713 |
142 |
8 |
42 |
0 |
2 |
9 |
18 |
37 |
26 |
0 |
0 |
50–59 |
1,063 |
200 |
23 |
61 |
1 |
6 |
8 |
40 |
42 |
19 |
0 |
0 |
60–69 |
920 |
209 |
17 |
39 |
0 |
2 |
5 |
50 |
56 |
40 |
0 |
0 |
≥ 70 |
1,979 |
471 |
27 |
64 |
1 |
5 |
12 |
131 |
185 |
45 |
0 |
1 |
Unknown |
1,510 |
490 |
88 |
90 |
6 |
7 |
43 |
85 |
121 |
40 |
1 |
9 |
Sex |
Male |
6,787 |
1,588 |
221 |
354 |
5 |
8 |
95 |
200 |
547 |
153 |
0 |
5 |
Female |
5,993 |
1,352 |
172 |
286 |
3 |
12 |
77 |
183 |
463 |
154 |
0 |
2 |
Unknown |
2,106 |
586 |
83 |
137 |
5 |
6 |
43 |
125 |
134 |
49 |
1 |
3 |
Table 3Regional distribution of the isolated bacterial pathogens.
|
Regions |
Specimens |
Salmonella spp. |
Escherichia coli
|
Shigella spp. |
Vibrio parahaemolyticus
|
Campylobacter spp. |
Clostridium perfringens
|
Staphylococcus aureus
|
Bacillus cereus
|
Listeria monocytogenes
|
Yersinia enterocolitica
|
Isolation Total |
Cities |
Seoul |
676 |
27 |
73 |
1 |
0 |
42 |
121 |
20 |
10 |
0 |
0 |
294 |
Busan |
868 |
21 |
30 |
0 |
0 |
8 |
72 |
44 |
11 |
0 |
0 |
186 |
Daegu |
821 |
12 |
48 |
0 |
0 |
7 |
52 |
23 |
8 |
0 |
0 |
150 |
Incheon |
1,237 |
81 |
115 |
7 |
2 |
40 |
187 |
60 |
72 |
0 |
1 |
565 |
Gwangju |
1,483 |
104 |
103 |
0 |
0 |
27 |
113 |
57 |
61 |
0 |
1 |
466 |
Daejeon |
812 |
8 |
40 |
0 |
2 |
14 |
13 |
43 |
17 |
1 |
0 |
138 |
Ulsan |
926 |
8 |
73 |
0 |
1 |
30 |
62 |
7 |
2 |
0 |
0 |
183 |
|
Subtotal |
6,823 |
261 |
482 |
8 |
5 |
168 |
620 |
254 |
181 |
1 |
2 |
1,982 |
Rural province |
Gyeonggi |
1,495 |
28 |
75 |
0 |
6 |
11 |
99 |
21 |
36 |
0 |
0 |
276 |
Gangwon |
1,342 |
60 |
56 |
0 |
2 |
1 |
41 |
4 |
22 |
0 |
0 |
186 |
Chungnam |
788 |
11 |
26 |
1 |
3 |
5 |
36 |
69 |
8 |
0 |
0 |
159 |
Chungbuk |
764 |
7 |
35 |
0 |
1 |
5 |
51 |
64 |
18 |
0 |
0 |
181 |
Jeonnam |
409 |
21 |
16 |
3 |
0 |
1 |
18 |
11 |
3 |
0 |
0 |
73 |
Jeonbuk |
1,815 |
19 |
38 |
0 |
0 |
4 |
231 |
34 |
84 |
0 |
8 |
418 |
Gyeongnam |
565 |
6 |
28 |
1 |
9 |
0 |
14 |
28 |
0 |
0 |
0 |
86 |
Gyeongbuk |
370 |
16 |
11 |
0 |
0 |
0 |
30 |
2 |
4 |
0 |
0 |
63 |
Jeju |
515 |
47 |
10 |
0 |
0 |
20 |
4 |
21 |
0 |
0 |
0 |
102 |
|
Subtotal |
8,063 |
215 |
295 |
5 |
21 |
47 |
524 |
254 |
175 |
0 |
8 |
1,544 |
|
Total |
14,886 |
476 |
777 |
13 |
26 |
215 |
1,144 |
508 |
356 |
1 |
10 |
3,526 |