The Food and Drug Administration (FDA), which approves and monitors vaccines to ensure their safety and effectiveness, has found pieces of a non-harmful porcine circovirus (originally found in healthy pigs) called porcine circovirus type 1 (PCV1) in the GlaxoSmithKline vaccine called “Rotarix®.” Porcine circovirus type 1 is not known to cause disease in people or animals.
