AQUAVAC® IridoV, an oiladjuvanted vaccine, is administered intraperitonealy as a single-injection dose to fish weighing no less than 5 grams. Fish susceptible to this disease include species such as Asian seabass, grouper, pompano and Japanese yellowtail. MSD Animal Health has demonstrated the onset of immunity against Iridovirus 10 days after vaccination at a water temperature of 27 degrees C. Studies have shown the vaccine’s duration of immunity to be at least 15 weeks after a single injection dose.