Pharmaceutical The US Food and Drug Administration has approved US drugs giant Merck & Co's (NYSE: MRK) cervical cancer vaccine Gardasil (Human Papillomavirus Quadrivalent [Types 6, 11, 16, and 18] vaccine, Recombinant) for the prevention of anal cancer caused by human papillomavirus (HPV) types 16 and 18, and for the prevention of anal intraepithelial neoplasia (AIN), in both men and women aged nine to 26, the company reported last night. 23 December 2010