Shadow of the Bat!

Teaser: From the files of the Bat-Computer, Batman and Robin in jungle-based outfits end up fighting Catwoman and her pet black panther Hecate in Africa. Batman and Robin are also assisted by Bat-Ape.
Main plot: Batman is assisted in chasing down the vampire Dala by Etrigan the Demon, but ends up getting bitten. Though he tries fighting off the hunger, Batman ends up feeding on Black Mask and Alfred. Seeing as there is no way to suppress his hunger, Batman decides to feed on the Justice League International. Though they put up a good fight, all but Martian Manhunter become vampires as well. Luckily, Etrigan comes to help, allowing Martian Manhunter to orbit the base close enough to the sun to incinerate the vampires. Batman awakens from this to see that he was just having a huge hallucination caused by venom in Dala’s bite for Batman never became a vampire.