Swimmer’s itch in Canada: a look at the past and a survey of the present to plan for the future

Table 1 Summary of swimmer’s Itch survey reports and cases over five years

Month	May		June		July		August		September
Year	Reports	Cases	Reports	Cases	Reports	Cases	Reports	Cases	Reports	Cases	Total Reports	Additional Cases	Total Cases
2013	NA	NA	19	NA	101	NA	149	NA	25	NA	295	NA	295
2014	0	0	1	2[1]	64	242[13]	75	281[51]	6	14[2]	144	388	532
2015	3	6[2]	78	283[12]	144	540[15]	102	355[17]	18	48[5]	347	892	1239
2016	7	18[6]	49	169[20]	128	442[12]	56	176[11]	6	31[10]	248	596	844
2017	1	3[3]	16	26[7]	152	432[14]	99	185[12]	13	22[4]	280	665	945
Average	2.75	9	32.6	120	117.8	414	96.2	249.25	13.6	28.75	262.8	635.25	771
Difference	6.25		87.4		296.2		153.05		15.15		508.2

Reports are individual survey events, while cases are the addition of reports and the additional number of people affected with swimmer’s itch at the same time as the person reporting. Brackets after the number of cases represents the maximum number of cases per report at that time

ISSN: 1476-069X