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Toxicity, biodistribution and persistence of candidate HIV vaccines pTHr.HIVA, a recombinant DNA, and MVA.HIVA, a recombinant modified vaccinia virus Ankara, were determined in the Balb/c mouse. The mice were injected with either two doses of intramuscular pTHr.HIVA DNA (50 microg each, separated by an interval of 14 days), two doses of intradermal MVA.HIVA (10(6) plaque-forming units each, separated by an interval of 14 days), or a combination of the two vaccines, each given in two doses, in a prime-boost regimen. The study showed no significant toxic effects, either local or systemic, under any of these employed dosing regimens. With the exception of the sites of delivery, the vaccine-derived HIVA DNA sequences were undetectable 5 weeks after the last dosing. Thus, both the vaccines alone and in a combination were considered safe and suitable for the use in phase I trials in humans.

Type

Journal article

Journal

Vaccine

Publication Date

22/11/2002

Volume

21

Pages

108 - 114

Keywords

AIDS Vaccines, Animals, Female, HIV-1, Kenya, Male, Mice, Mice, Inbred BALB C, Polymerase Chain Reaction, Vaccines, DNA, Vaccinia virus