Harris got the ball on a botched Jacksonville snap and ran for a touchdown. The Vikings (6-5) then scored a little over a minute later on a 3-yard run by Chester Taylor and had a 17-7 lead by the end of the first quarter.
Vikings quarterback Gus Frerotte was 2-of-20 passing for 120 yards and an interception.
David Garrard completed 27-of-45 passes for 317 yards and a touchdown for the Jaguars (4-7), who have lost four of their last five games.
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