When Science is marketed...

To achieve the 98 percent efficacy claim, Merck excluded from analysis anyone who “violated” the study protocol. In other words, all real-world problems that arose were excluded from analysis. Problems like girls who refused to take a second or third shot after they became sick and (correctly or incorrectly) blamed the vaccine. Or doctors who incorrectly gave the vaccine to someone who shouldn’t have received it. While it’s worth knowing how effective the vaccine is when it’s used exactly as it should be, for a public-health decision, it’s not as relevant as its real-world effectiveness.

To Merck’s credit, they reported that when all women in the study were analyzed, the vaccine’s efficacy dropped to 44 percent. Still, 44 percent might be considered a smashing success when you’re talking about saving lives. Except for one thing: the numbers get worse. The 44 percent benefit included only those women with the two specific cancer-causing HPV strains found in the vaccine. But when the researchers looked at negative cervical changes from any causes, they found that changes occurred in unvaccinated women at a rate of 1.5 events per 100 person-years, while vaccinated women had 1.3 events—dropping the benefit to 17 percent.

Moreover, most of the cervical changes tracked by the researchers weren’t even indicative of cervical cancer in the first place. Most were innocent cellular abnormalities that either disappear entirely on their own, or never progress to cancer. In fact, when they looked more closely at advanced cervical changes most likely to progress to cancer versus more innocent changes that go away spontaneously, it was the innocent changes that accounted for the decline.

Whether Gardasil will reduce cervical cancer deaths in real-world conditions has simply never been answered. It might—but that would take a long-term study, and one that should be done before it’s widely promoted.

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So how did the HPV vaccine become a multi-billion-dollar winner for Merck? Well you might not be surprised to hear that the company happily lavished money on doctors, professional societies, and over 100 legislators. Of course, there is no tie between the recipients of this largesse and their promotion of the vaccine, say beneficiaries like presidential candidate and current Texas governor Rick Perry. In 2007, Perry signed an executive decree mandating that all girls in Texas receive the vaccine. The $28,500 Perry received was minor compared to his other connection to Merck: Perry’s chief of staff, Mike Toomey, became a lobbyist for Merck, championing the HPV vaccine. Once in that position, announced his plans to raise over $50 million for Perry’s presidential campaign.