TABLE 2.

Equine serological surveillance of Influenza virus types C and D in 2015

Farm ID	Location	D/OK		D/660		C/JHB
		Positive\Total	Average Titre	Positive\Total	Average Titre	Positive\Total	Average Titre
1	SD	6\42	51.7	3\42	46.7	14\42	60
2	SD	0\13	–	0\13	–	2\13	40
3	SD	1\11	80	1\11	40	0\11	–
4	SD	0\9	–	1\9	60	2\9	60
5	SD	2\9	40	0\9	–	0\9	–
6	SD	1\7	40	0\7	–	0\7	–
7	SD	1\7	45	0\7	–	1\7	40
8	SD	1\6	60	0\6	–	0\6	–
9	SD	0\5	–	0\5	–	1\5	40
10	SD	1\5	40	0\5	–	0\5	–
11	SD	2\5	80	2\5	50	0\5	–
12	SD	1\5	45	0\5	–	0\5	–
13	SD	0\5	–	0\5	–	1\5	40
14	SD	1\5	80	1\5	80	0\5	–
15	MN	2\4	70	2\4	80	0\4	–
16	SD	0\4	–	0\4	–	2\4	–
17	SD	0\4	–	1\4	40	0\4	–
18	NE	0\4	–	0\4	–	1\4	40
19	MN	4\4	70	4\4	60	0\4	–
20	SD	0\4	–	0\4	–	1\4	40
21	NE	1\4	50	0\4	–	0\4	–
22	SD	0\4	–	1\4	45	0\1	–
23	SD	1\4	60	1\4	80	0\4	–
24	SD	1\4	60	1\4	40	0\4	–
25	SD	1\4	40	1\4	45	0\4	–
26	SD	0\4	–	0\4	–	1\4	40
27	NE	0\3	–	0\3	–	0\3	–
28	SD	1\3	40	0\3	–	0\3	–
29	SD	0\3	–	0\3	–	1\3	40
30	SD	1\3	60	2\3	70	0\3	–
31	SD	0\3	–	1\3	80	0\3	–
32	SD	0\3	–	1\3	40	0\3	–
33	SD	1\2	40	0\2	–	0\2	–
34	WY	0\2	–	0\2	–	1\2	40
35	IA	0\2	–	0\2	–	1\2	80
36	SD	1\2	60	0\2	–	1\2	40
37	SD	0\2	–	0\2	–	2\2	60
38	SD	1\2	40	0\2	–	0\2	–
39	SD	0\2	–	0\2	–	1\2	80
40	SD	1\2	40	0\2	–	0\2	–
41	SD	1\2	60	1\2	80	0\2	–
42	SD	1\2	80	1\2	80	1\2	40
43	SD	1\2	60	1\2	40	0\2	–
44	SD	0\2	–	0\2	–	1\2	40
45	SD	0\2	–	0\2	–	1\2	80
46	SD	1\2	80	1\2	80	0\2	–
47	SD	0\2	–	1\2	40	1\2	40
Total		36\230		28\230		37\230

Only farms with at least one serum sample positive to at least one of the listed three viruses were included. This table does not include the farms that only had one sample. Each farm ID is accompanied by its location by state within the USA. For each farm, the number of samples positive to the virus over the number of total samples and the average HI titre of the positive samples are shown. A “–” indicates the samples were negative to the virus.