CDC Report Stirs Controversy For Merck's Gardasil Vaccine

Mother believes daughter died due to HPV Vaccine

A government report released Tuesday raises new questions about the safety of the cervical cancer vaccine Gardasil. The vaccine has been linked to 32 unconfirmed deaths and shows higher incidences of fainting and blood clots than other vaccines.

But while some physicians expressed concern over the findings, other doctors viewed the report as reassuring, showing that the vaccine was not associated with any more unusual and serious side effects as other vaccines.

The results of the report appeared along with an accompanying editorial discussing whether the potential benefit of the HPV vaccine is worth its potential risks in the Journal of the American Medical Association. The editorial, in particular, could give pause to many parents faced with the decision of whether or not to have their 11- and 12-year-old daughters vaccinated against the certain strains of the human papillomavirus, or HPV.

On Wednesday morning, ABC News Chief Medical Editor Dr. Timothy Johnson said that he, too, would encourage parents to learn more about the shot before getting their daughters vaccinated.

"I am very much in favor of childhood vaccines," Johnson told Chris Cuomo on Wednesday's "Good Morning America," adding that there is little doubt that the vaccine does have its benefits.

"We know it does what it says – it prevents HPV infections," he said.

But he added that when it comes to comparing the benefits of the HPV vaccine against its potential risks, he believes there simply is not enough evidence to recommend to all parents that they have their daughters vaccinated.

"I don't think we yet know the long term benefits or risks," Johnson said. "I'm taking a pass on this one and saying to parents, 'Study the issue, read the editorial... talk to your doctor.'"

Those who search for more information on the vaccine may also find stories from other parents who say the vaccine had ill effects on their daughters. One of these parents, Emily Tarsell, started her daughter Christina on Gardasil -- a vaccine that protects against four of the most common cancer-causing strains of the human papilloma virus (HPV) -- after her first visit to a gynecologist and at the doctor's recommendation.

Eighteen days after Christina received her final vaccine shot, she died.

"I know it was the Gardasil," Tarsell said, although the official cause of death was undetermined. "They were really recommending it, saying that there weren't any side effects, that it was safe. So I kind of went against my better instinct [and let her] get the shot."

Deaths like Christina's are one of several types of complications reported to the U.S. Vaccine Adverse Event Reporting System (VAERS) following Gardasil distribution in 2006. Some of these adverse events were serious, including blood clots and neurological disorders, and some were non-life threatening side effects from the vaccine, including fainting, nausea and fever.

Although experts agree that the accuracy of data from VAERS reports -- which can be made by anyone and are not verified or controlled for quality -- is questionable, they remain divided as to whether extreme adverse events, which are serious but rare, are cause enough to stop recommending and administering the Gardasil vaccine without further investigation.

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