BeCuriouzLearn something new every day
The cancer we can almost vaccinate away
💡 Cervical cancer is one of the few cancers with a known viral cause, making it largely preventable through HPV vaccination combined with routine screening.
Most cancers have tangled, poorly understood causes. Cervical cancer is a striking exception: nearly all cases are caused by a single, common virus — human papillomavirus (HPV). Persistent infection with a few high-risk strains (especially types 16 and 18) drives the cellular changes that can turn into cancer over years or decades. Because we know the cause, we have unusually powerful tools to stop it.
HPV itself is extraordinarily common — most sexually active people are exposed at some point, and the immune system usually clears it without any symptoms. The danger comes from persistent infection with a high-risk type that lingers. The HPV vaccine trains the immune system against the strains responsible for the majority of cervical cancers, and it works best when given before exposure — which is why it's recommended in the pre-teen years.
Vaccination is only half the strategy. Screening — the Pap test and HPV testing — catches precancerous changes while they're still easy to treat, long before cancer develops. This two-part approach is so effective that the World Health Organization has set a formal goal to eliminate cervical cancer as a public-health problem, a target almost unheard of for any cancer.
Source: World Health Organization — Cervical cancer elimination initiative