In Pictures: Americaâs Safest Cities. Henderson, Nev., takes the No. 2 spot despite its location within the Metropolitan Statistical Area of Las Vegas-Paradise, which ranked ninth this year on Forbesâ list of Americaâs Most Dangerous Cities.
Use in Cancer. Recombinant human papillomavirus (HPV) quadrivalent vaccine is approved to prevent some conditions caused by certain types of HPV. It is used in males or females aged 9 to 26 years to prevent the following: 1  Anal cancer.2  Cervical cancer. 3  Vaginal cancer.4  Vulvar cancer.ecombinant human papillomavirus (HPV) quadrivalent vaccine is approved to prevent some conditions caused by certain types of HPV. It is used in males or females aged 9 to 26 years to prevent the following: 1  Anal cancer. 2  Cervical cancer. 3  Vaginal cancer. 4  Vulvar cancer.
One reason the CDC is not favoring the quadrivalent vaccine over the trivalent vaccine is that they do not want people to miss getting a flu vaccine altogether because they're waiting for the quadrivalent option.âThere is only a limited supply of the quadrivalent vaccine this year,â Mossad said.ccording to the CDC, of the 135 to 139 million flu vaccine doses available this year, fewer than 32 million will be the quadrivalent vaccine. But experts agree that if the quadrivalent vaccine is not available in your area, go ahead and get the trivalent version.