Table 1.

Infectious agents investigated by serological analysis.

Infectious agents	Tests	References
Brucella spp.	Rose Bengale test	(OIE, 2008; chapter 2.4.3 part 2.a)
Equine Viral Arteritis virus	Virus neutralisation test	(OIE, 2008; chapter 2.5.10 part 2.a)
Equine Herpes Virus type I	Virus neutralisation test	(OIE, 2008; chapter 2.5.9 part 2.1)
L. interrogans (Bratislava, Pomona, Icterohaemorrhagiae and Saxkoebing)	Microscopic agglutination test	(OIE, 2008; chapter 2.1.9 part 2.1)
Salmonella abortus equi	Direct agglutination test (micromethod)	(OIE, 2008; chapter 2.9.9)