A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland

Table 2 Number of horses involved in the longitudinal study before export from Iceland and one (T − 1), two (T − 2), three (T − 3) and four (T − 4) summers after importation from Iceland into Switzerland

	Iceland	T1	T2	T3	T4	T5
Clinical status at time point	40	145	135	122	78	30
Tested in CAST
Horses that remained healthy	15	71	55	41	19
Horses that developed IBH^a	19	49	54	38	32
Total	34	120	109	79	51

ISSN: 1751-0147