TABLE 1.

Virus status following SHIV challenge

Group	Animal	Statusa
		1st challenge (45)		2nd challenge		3rd challenge
		Homologous SHIV strain	Outcome	Heterologous, nonvirulent SHIV strain	Outcome	Related, highly virulent SHIV strain	Outcome
A	9143	W6.1D	Protected	han2	Protected	89.6p	Infected
	9157	W6.1D	Protected	sf13	Protected	89.6p	Infected
	9172	W6.1D	Infected	sf13	(prot, W6.1D)	89.6p	(prot, W6.1D)
	9206	W6.1D	Infected	han2	Transient	89.6p	Infected
B	9150	W6.1D	Protected	han2	Infected	89.6p	(prot, han2)
	9175	W6.1D	Protected	sf13	Transient	89.6p	Infected
	9214	W6.1D	Protected	sf13	Transient	89.6p	Infected
	9208	W6.1D	Protected	han2	Protected	89.6p	Infected
C	9171	W6.1D	Protected	han2	Protected	89.6p	Infected
	9203	W6.1D	Protected	sf13	Protected	89.6p	Infected
	9205	W6.1D	Protected	han2	Protected	89.6p	Protected
	9241	W6.1D	Protected	sf13	Protected	89.6p	Infected
D	AA002	W6.1D	Infected
	J040	W6.1D	Infected
	L146	W6.1D	Infected
	Y005	W6.1D	Infected
	K7D			han2	Infected
	KXO			han2	Infected
	KKO			sf13	Infected
	VC1			sf13	Infected
	BJC					89.6p	Infected
	WT5					89.6p	Infected

^aFor explanation of boldface, see Results.