TABLE 1.

Summary of EIAV-infected horses, clinical parameters, and plasma viremia

Horse no.	Virus strain	Virus dosea	Initial clinical diseaseb	Days postinfection at necropsy	Clinical status at necropsy	Viremia during acute diseasec
2084	Wyo	106	Severe	15	Acute clinical	Yes
2092	Wyo	101	Severe	22	Acute clinical	Yes
2079	WSU5	106	Mild	29	Acute clinical	Yes
2085	Wyo	106	Severe	124	Chronic clinical	Yes
524	Wyo	103	Severe	879	Subclinical	Yes
489	WSU5	106	Mild	665	Subclinical	Yes
498	WSU5	106	Mild	726	Subclinical	Yes

^aEIAV_Wyo, horse infectious doses; EIAV_WSU5, 50% tissue culture infectious doses. 

^bSevere disease characterized by evidence of hemorrhagic diathesis. 

^cVirus was detected by RT-PCR on plasma and/or virus isolation on neonatal equine kidney cells.