Volume 27, Number 9—September 2021
Research
Spatiotemporal Dynamics of Sporadic Shiga Toxin–Producing Escherichia coli Enteritis, Ireland, 2013–2017
Table 2
Results of year on year space-time scanning among all confirmed sporadic VTEC cases in Ireland, 2013-2017
Cluster no. | Population | No. cases | Expected | Observed/ expected | RR | Start date | End date | p value |
---|---|---|---|---|---|---|---|---|
2013 | ||||||||
1 | 268,082 | 32 | 4.62 | 6.93 | 7.37 | 2013 Jul 1 | 2013 Aug 31 | 0.00000000016 |
2 | 140,784 | 27 | 3.60 | 7.50 | 7.90 | 2013 May 1 | 2013 Jul 31 | 0.0000000041 |
3 | 147,000 | 25 | 3.76 | 6.65 | 6.97 | 2013 May 1 | 2013 Jul 31 | 0.00000030 |
4 |
154,425 |
18 |
3.91 |
4.61 |
4.75 |
2013 Apr 1 |
2013 Jun 30 |
0.022 |
2014 | ||||||||
1 | 370,743 | 40 | 9.72 | 4.11 | 4.40 | 2014 Jul 1 | 2014 Sep 30 | 0.00000022 |
2 |
75,467 |
14 |
1.96 |
7.15 |
7.34 |
2014 Apr 1 |
2014 Jun 30 |
0.0041 |
2015 | ||||||||
1 | 165,552 | 14 | 1.50 | 9.36 | 9.60 | 2015 Sep 1 | 2015 Sep 30 | 0.00018 |
2 | 245,189 | 27 | 6.79 | 3.97 | 4.14 | 2015 May 1 | 2015 Jul 31 | 0.00067 |
3 |
59,890 |
13 |
1.66 |
7.83 |
8.02 |
2015 May 1 |
2015 Jul 31 |
0.0037 |
2016 | ||||||||
1 | 299,166 | 42 | 10.59 | 3.97 | 4.18 | 2016 May 31 | 2016 Aug 30 | 0.00000033 |
2 | 119,941 | 21 | 4.20 | 5.00 | 5.14 | 2016 May 1 | 2016 Jul 30 | 0.0017 |
3 |
261,375 |
31 |
9.25 |
3.35 |
3.47 |
2016 Mar 31 |
2016 Jun 30 |
0.0044 |
2017 | ||||||||
1 | 345,279 | 54 | 12.93 | 4.18 | 4.45 | 2017 Jun 30 | 2017 Sep 29 | 0.00000000006 |
2 | 190,947 | 27 | 7.15 | 3.78 | 3.89 | 2017 Jul 30 | 2017 Oct 29 | 0.0042 |
3 | 232,749 | 29 | 8.71 | 3.33 | 3.43 | 2017 Jun 30 | 2017 Sep 29 | 0.015 |
4 | 66,817 | 15 | 2.47 | 6.06 | 6.18 | 2017 Apr 30 | 2017 Jul 29 | 0.017 |
5 | 81,564 | 10 | 1.00 | 10.04 | 10.18 | 2017 Sep 30 | 2017 Oct 29 | 0.027 |
*RR, relative risk; VTEC, verocytotoxin-producing Escherichia coli.
1These first authors contributed equally to this article.