Suvazyn Circo (porcine circovirus vaccine (inactivated, recombinant)) is used in pigs to protect against Porcine Circovirus type 2 (PCV2), that can cause weight loss or failure to grow, enlarged lymph nodes, difficulty breathing, pale skin and jaundice. Suvaxyn Circo helps reduce these, viral load of PCV2 in the blood and lymphoid tissues, and fecal shedding.