▁by ▁less ▁react ogen ic , ▁cell - free ▁v acc ines ▁consisting ▁of ▁pur ified ▁components , ▁including ▁caps ular ▁pol ys ac char ides ▁and ▁their ▁conjug ates , ▁to ▁protein ▁carri ers , ▁as ▁well ▁as ▁in activ ated ▁to x ins ▁( to x oid s ) ▁and ▁prote ins . ▁ ▁Ph age ▁ther apy ▁ ▁Ph age ▁ther apy ▁is ▁another ▁method ▁for ▁tre ating ▁ant ib i otic - res istant ▁stra ins ▁of ▁b acter ia . ▁Ph age ▁ther apy ▁inf ect s ▁path ogen ic ▁b acter ia ▁with ▁their ▁own ▁vir uses . ▁B acter i oph ages ▁and ▁their ▁host ▁ranges ▁are ▁extremely ▁specific ▁for ▁certain ▁b acter ia , ▁thus , ▁unlike ▁ant ib iot ics , ▁they ▁do ▁not ▁disturb ▁the ▁host ▁organ ism ▁and ▁int est inal ▁micro fl ora . ▁B acter i oph ages , ▁also ▁known ▁simply ▁as ▁ph ages , ▁inf ect ▁and ▁can ▁kill ▁b acter ia ▁and ▁affect ▁b acter ial ▁growth ▁primarily ▁during ▁l yt ic ▁cycles . ▁Ph ages ▁insert ▁their ▁DNA ▁into ▁the ▁b acter ium , ▁where ▁it ▁is ▁trans cribed ▁and ▁used ▁to ▁make ▁new ▁ph ages , ▁after ▁which ▁the ▁cell ▁will ▁ly se , ▁re le asing ▁new ▁ph age ▁that ▁are ▁able ▁to ▁inf ect ▁and ▁destroy ▁further ▁b acter ia ▁of ▁the ▁same ▁stra in . ▁The ▁high ▁specific ity ▁of ▁ph age ▁protect s ▁" good " ▁b acter ia ▁from ▁destruction