Inclusion Criteria:  Between 14 and 45 years of age Men who identify themselves as having sex with other men Transgender women Women or men living on the street/homeless Women or men who have suffered rape People with or without HIV infection  Exclusion Criteria:  Under 14 years or over 45 years of age History of any serious adverse reaction prior to any component of the influenza vaccine, such as life-threating, hospitalization, partial or total disability, or incurable damage Chronic HIV infection in stages A3, B3 and C3, and/or CD4 cell count less than 200 cells per cubic millimeter Presence in the HIV-positive participant of an active opportunistic infection such as: Toxoplasma Gondii encephalitis, Cryptococcosis, Tuberculous meningitis, Pulmonary tuberculosis, Community acquired pneumonia, Pneumocystis jiroveci, Isosporidiasis, Cryptosporidiasis, Salmonellosis, Candida esophagitis and esophagitis, Esophagitis Vascular neoplasia Pregnancy confirmed by laboratory test Previous vaccination against HPV Previous treatment of intraanal lesions