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The FDA warns against using Rotarix rotavirus vaccine--at least temporarily

March 22, 2010 | 11:49 am

The Food and Drug Administration on Monday warned doctors and parents against using the Rotarix rotavirus vaccine until further testing can confirm that it is safe. The warning follows the discovery by an academic research group--subsequently confirmed by the FDA and Rotarix manufacturer GlaxoSmithKline -- that the vaccine contains a pig virus called porcine circovirus 1 or PCV1. The virus is not known to cause illness in humans, and no adverse effects have been observed in children vaccinated with Rotarix, but the agency decided to err on the side of caution with the warning until more information can be obtained.

For the time being, the agency recommends that pediatricians use a competing vaccine, RotaTeq, manufactured by Merck. Preliminary tests have found no traces of PCV1 in this vaccine.

Rotavirus causes severe diarrhea and dehydration and is thought to cause more than 500,000 deaths in infants worldwide each year, primarily in low- and middle-income countries. Before the introduction of RotaTeq in the U.S. in 2006, the disease caused an estimated 50,000 hospitalizations and several dozen deaths each year. Rotarix was introduced in 2008 and most U.S. children who have been vaccinated against rotavirus have received RotaTeq, the FDA said.

The agency is now attempting to determine whether the vaccine contains intact PCV1 or simply viral fragments, as well as how it got into the vaccine. The agency said it will convene an expert advisory panel in four to six weeks to make further recommendations.

The World Health Organization and the European Medicines Agency are expected to release statements Monday confirming current guidelines for using the drug. They will argue that the benefit from the vaccine far outweighs any potential risk, according to a statement by GlaxoSmithKline.

An estimated 69 million doses of the vaccine have been administered globally. Estimated worldwide sales of the vaccine in 2009 were $425 million, the company said.

-- Thomas H. Maugh II

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Comments (3)

The worst thing about this? It will scare parents and add fuel to the anti-immunization fire.

Vaccines are overwhelmingly safe and prevent devastating death and disease. We need to keep these very small risks in perspective.

The worst thing about this? Is the fact that they are forcing this on every child in America when there are only a small # of deaths. It makes sense in countries where risk is high, maybe not in countries where risk is not so high. There are side affects to every decision we make, why is there no risk-benefit analysis with health care? And the second worse thing is, this isn't the first vaccine that has been pulled while the FDA continues to treat people who have skepticism as mentally ill. Who's crazy here?

This is a wake-up call. After discovery of this contamination, all marketed vaccines should be rigorously screened for the presence of uncertain biologic recombinants. Are we inadvertently transfecting ourselves with non-human DNA with every jab? I hope not!

_The truth that vaccine policy is not about science or safety but about money and politics is finally seeing the light of day._ – K. Paul Stoller, MD, FACHM, on January 13th, 2009.

_The history of vaccine in littered with horrible mistakes and skulduggery – from the SV40 virus given to millions in the polio vaccine to the continued use of mercury and other heavy metals. The fact is even the best MMR vaccine is contaminated with avian retro virus and reverse transcriptase. This is criminal!_ – K. Paul Stoller, MD, FACHM, on January 13th, 2009.


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