Paracox-5 is a translucent, aqueous suspension of oocysts derived from five precocious lines of coccidia, presented as a live, attenuated oral vaccine. Paracox-5 is used for the active immunization of broiler chickens to reduce infection and clinical signs of coccidiosis caused by Eimeria acervulina, E. maxima, E. mitis and E. tenella.