Judging by comments on various lists, folks aren't as familiar with the ritual of the taurobolium as I thought (sorry ... I'm full of antihistamines which do nothing but make me groggy) ... the rite is described in Prudentius' Peristephanon, with the appropriate section available as a reasonable translation on the web. The Wikipedia article, culled from the Encyclopedia Britannica, gives a good overview. I'm not sure whether taurobolia were done 'pro salute' someone at this point in Rome's history. There are piles of inscriptions in the late first and into the second centuries attesting to the practice, especially when emperors were embarking on a campaign.