“U.S. federal health authorities recommended … that doctors suspend using Rotarix, one of two vaccines licensed in the U.S. against rotavirus, saying the vaccine is contaminated with material from a pig virus,” CNN reports.
The Rotarix vaccine, which is made by GlaxoSmithKline and was approved by the FDA in 2008, has already been given to about 1 million U.S. children along with 30 million worldwide. The vaccine was found to contain DNA from porcine circovirus 1.
“The FDA learned about the contamination after an academic research team using a novel technique to look for viruses in a range of vaccines found the material in GlaxoSmithKline's product and told the company,” FDA Commissioner Dr. Margaret Hamburg told CNN.