Original sentence: " In an article in the 2013 book Vaccination Controversies: A Reference Handbook, she argued further against HPV vaccine mandates for schoolchildren, saying: "Population health models show that if the HPV vaccine does not last for at least 15 years, no cancers will ever be prevented; women will just get the cancers at a later time in life after the vaccine has worn off" and that Gardasil and Cervarix have only been shown to last for 5 and 9.4 years respectively
Edited sentence: " In an article in the 2013 book Vaccination Controversies: A Reference Handbook, she argued further against HPV vaccine mandates for schoolchildren, because "Population health models show that if the HPV vaccine does not last for at least 15 years, no cancers will ever be prevented; women will just get the cancers at a later time in life after the vaccine has worn off" and that Gardasil and Cervarix have only been shown to last for 5 and 9.4 years respectively