Coccivac-B52 is a live oocyst coccidiosis vaccine from Merck Animal Health that immunizes healthy chickens against coccidiosis caused by Eimeria acervulina, E. maxima, E. mivati, and E. tenella. It is widely used in broilers to build early, natural immunity to cocci without relying solely on in feed coccidiostats.Key Uses Active immunization of healthy chickens against coccidiosis due to four Eimeria species Commonly given at the hatchery by coarse spray on day of age Supports flock to flock consistency in coccidiosis control programs Can be used as part of a rotation or shuttle program with anticoccidial drugs Relies on birds having access to litter and droppings so reinfection can build lasting immunity Administration NotesVaccinate only healthy chickens, and use the full contents of the vial once opened. Follow your veterinarian's withdrawal guidance and do not vaccinate close to slaughter.
