Figure 1The regional distribution of reported outbreaks of food poisoning caused by K septempunctata.
Figure 2The monthly distribution of reported outbreaks of food poisoning caused by K septempunctata.
Figure 3
Kudoa (+) detection rate in feces by time interval between food intake and epidermiologic survey.
Table 1Summary of epidemiologic investigation reports of Kudoa foodborne illness outbreaks in Gyeonggi province between 2015 and 2016.
Outb No |
Date of occurrence |
Time interval (hr)1
|
Incubation (hr) mean (min~max) |
No of pts |
No of persons in risk |
Attack rate (%) |
Diarrhea (%) |
Nausea (%) |
Vomiting (%) |
Abdominal pain (%) |
Febrile sense (%) |
Feces exam rate (%)2
|
Kudoa(+) rate in feces(%)3
|
Attack rate with o.f.(%)4
|
Intake of o.f. among pts(%)5
|
Intake of o.f. among nonpts(%)6
|
1 |
01/18/15 |
25.5 |
5.9 (5~6.5) |
7 |
8 |
87.5 |
71.4 |
71.4 |
57.1 |
85.7 |
- |
85.7 |
100.0 |
87.5 |
100.0 |
100.0 |
2 |
04/19/15 |
17.8 |
3.5 (3~4) |
3 |
4 |
75.0 |
100.0 |
0 |
66.7 |
66.7 |
0 |
66.7 |
50.0 |
100.0 |
100.0 |
0 |
3 |
08/18/15 |
-7
|
4,1 (2~9) |
14 |
18 |
77.8 |
100.0 |
57.1 |
100.0 |
42.9 |
50.0 |
21.4 |
66.7 |
100.0 |
- |
- |
4 |
10/14/15 |
22.2 |
3.5 (2~5) |
4 |
15 |
26.7 |
75.0 |
75.0 |
50.0 |
75.0 |
50.0 |
75.0 |
66.7 |
26.7 |
100.0 |
100.0 |
5 |
03/20/16 |
21.5 |
- |
2 |
4 |
50.0 |
100.0 |
100.0 |
100.0 |
100.0 |
100.0 |
100.0 |
100.0 |
50.0 |
100.0 |
100.0 |
6 |
03/26/16 |
- |
- |
3 |
12 |
25.0 |
100.0 |
100.0 |
100.0 |
100.0 |
100.0 |
66.7 |
50.0 |
25.0 |
100.0 |
100.0 |
7 |
04/20/16 |
25.5 |
- |
3 |
6 |
50.0 |
- |
- |
- |
- |
- |
100.0 |
100.0 |
50.0 |
100.0 |
100.0 |
8 |
04/29/16 |
78.0 |
4.5 (3~6) |
3 |
3 |
100.0 |
100.0 |
0 |
100.0 |
0 |
0 |
100.0 |
33.3 |
100.0 |
100.0 |
uncalc8
|
9 |
04/29/16 |
17.5 |
- |
3 |
3 |
100.0 |
100.0 |
100.0 |
100.0 |
66.7 |
33.3 |
33.3 |
100.0 |
100.0 |
100.0 |
uncalc |
10 |
06/10/16 |
28.5 |
- (5~6) |
4 |
20 |
20.0 |
100.0 |
100.0 |
100.0 |
100.0 |
0 |
100.0 |
25.0 |
- |
- |
- |
11 |
06/12/16 |
19.5 |
- |
3 |
5 |
60.0 |
100.0 |
0 |
100.0 |
100.0 |
0 |
66.7 |
50.0 |
- |
- |
- |
12 |
10/08/16 |
53.0 |
3.5 (3~4) |
2 |
2 |
100.0 |
100.0 |
100.0 |
100.0 |
50.0 |
0 |
100.0 |
50.0 |
100.0 |
100.0 |
uncalc |
13 |
10/18/16 |
35.8 |
6.5 (6~7) |
2 |
2 |
100.0 |
100.0 |
0 |
100.0 |
50.0 |
50.0 |
50.0 |
100.0 |
100.0 |
100.0 |
uncalc |
14 |
11/03/16 |
13.8 |
- |
3 |
3 |
100.0 |
66.7 |
100 |
100.0 |
100.0 |
66.7 |
66.7 |
100.0 |
100.0 |
100.0 |
uncalc |
15 |
11/08/16 |
- |
2.5 (2~3) |
3 |
6 |
50.0 |
100.0 |
33.3 |
66.7 |
66.7 |
0 |
33.3 |
100.0 |
50.0 |
100.0 |
100.0 |
16 |
11/08/16 |
15.5 |
5.0 (4~6) |
3 |
4 |
75.0 |
66.7 |
0 |
66.7 |
66.7 |
0 |
66.7 |
50.0 |
75.0 |
100.0 |
100.0 |
mean |
|
28.8/outb |
4.3/outb |
3.9/outb |
7.2/outb |
53.9 (62/115) |
91.5 (54/59) |
57.6 (34/59) |
86.4 (51/59) |
67.8 (40/59) |
34.6 (18/52) |
62.9 (39/62) |
69.2 (27/39) |
64.7 (55/85) |
100 (41/41) |
96.8 (30/31) |