Potential impact of a nonavalent anti HPV vaccine in Italian men with and without clinical manifestations

Sci Rep. 2021 Feb 18;11(1):4096. doi: 10.1038/s41598-021-83639-6.

Abstract

Human papilloma virus infection (HPV) is the most common sexually transmitted disease. Little is known about male infection. Nonavalent vaccine against types 6/11/16/18/31/33/45/52/58 was approved and neutral gender immunization programs have been proposed. This study evaluates the potential impact of nonavalent vaccine compared to quadrivalent in male living in Sicily (Italy). 58.7% of samples were HPV positive and forty-four types of HPV were identified. A significant higher estimated coverage of nonavalent vaccine than quadrivalent was observed (64.3% vs. 45.8%), with absolute and relative additional impact of 20.1% and 47.2%, respectively. Low impact of the vaccine were calculated as the empirical probability of HPV genotypes 6/11/16/18/31/33/45/52/58 alone or in combination; the high impact as empirical probability of HPV6/11/16/18/31/33/45/52/58 genotypes alone or in association with other genotypes. The potential impact of the nonavalent vaccine vs quadrivalent was significant for low and high impact (29.7% > 18:8%; 34:6% > 26.6%, respectively). Particularly, in men with lesions and risky sexual contact was significant only for low impact (35.5% > 29.7%; 31.4% > 19.7%, respectively). In partners with positive females was significant for low impact (26.3% > 15.1%) and high impact (33.7% > 23.2%). Nonavalent vaccine offers broader protection in men with HPV positive partners, who would have a potential role in the transmission of the infection.

MeSH terms

  • Adult
  • Aged
  • Case-Control Studies
  • Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18 / therapeutic use
  • Humans
  • Male
  • Middle Aged
  • Papillomaviridae / genetics
  • Papillomavirus Infections / epidemiology
  • Papillomavirus Infections / pathology
  • Papillomavirus Infections / prevention & control*
  • Papillomavirus Infections / transmission
  • Papillomavirus Vaccines / therapeutic use*
  • Sicily / epidemiology
  • Young Adult

Substances

  • Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18
  • Human Papillomavirus Recombinant Vaccine nonavalent
  • Papillomavirus Vaccines