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The vaccines have been shown to offer 100 percent protection against the development of cervical pre-cancers and genital warts caused by the HPV types in the vaccine, with few or no side effects. The protective effects of the vaccine are expected to last a minimum of 4.5 years after the initial vaccination.
From the WebMD Archives. April 12, 2011 -- Delaying doses of a vaccine that protects against cervical cancer doesnât appear to make it any less safe or effective, a new study shows. The vaccine against human papilloma virus (HPV) is given in three shots over a period of six months.