TABLE 1.   Virus recovery and PCR analysis for proviral DNA following challenge


Treatment Animal Virus recovery at wk postchallengea
No. of animals protected/total
2 4 8 12b

CAP:I 89D420 0 0 0 0 [+] 1/6
H608 0 0 0 0 [+]
359L + + + ND
407L 0 0 0 0 [-]
H671 + + + ND
89D367 + + + ND
CAP:II 89C001 0 0 0 0 [-] 4/6
P778 0 0 0 0 [-]
976W ++ ++ ++ ND
P851 ++ ++ ++ ND
936P 0 0 0 0 [-]
P407 0 0 0 0 [-]
Control 89D264 ++ ++ ++ ++ 0/4
89D205 + + + +
59R ++ ++ ++ ++
AH37 ++ ++ ++ ++

a +, Positive results after single treatment and challenge; ++, positive results after double treatment and challenge; ND, not done; 0, negative result.
b Symbols in brackets indicate presence (+) or absence (-) of proviral DNA 12 weeks after double treatment and challenge for animals negative for virus isolation.