TABLE 32-1.

Diagnostic PCR Assays for Equine Pathogens With Biologic Sample Type Used for Detection

Pathogen	Biologic Sample Type Used for Detection
Anaplasma phagocytophilum	Whole blood
Corynebacterium pseudotuberculosis	Aspirate from abscess, body fluid
Equine arteritis virus	NPS, TW, BAL
Equine coronavirus	Feces
Equine influenza virus	NPS, TW, BAL
Equine herpesvirus type 1	NPS, TW, BAL and whole blood
Equine herpesvirus type 4	NPS, TW, BAL
Equine rhinitis A and B virus	NPS
Equine rotavirus	Feces
Lawsonia intracellularis	Feces and blood for serology
Neorickettsia risticii	Feces and whole blood
Salmonella spp	Feces, selective enrichment broth
Streptococcus equi subsp equi	NPS, NPL, GPL, lymph node aspirate

BAL, Bronchoalveolar lavage fluid; GPL, guttural pouch lavage; NPL, nasopharyngeal lavage; NPS, nasal/nasopharyngeal swab; TW, tracheal wash fluid.