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Table 1 HPV4 vaccine efficacy study against external genital lesions and persistent HPV infection in men 16-26 years of age (n = 4065) [56]

From: Towards the eradication of HPV infection through universal specific vaccination

Endpoint HPV4 (n = 1397) Placebo (n = 1408) Efficacy (%) 95% CI
  N° cases N° cases   
All external genital lesions 3 31 90.4 (all HPV types) 62.2-97.9
Condyloma 3 28 89.4 65.5-97.9
Penile/perianal/perineal intraepithelial neoplasia 0 3 100 0-100
Persistent infection (all HPV types) 15 101 85.6 73.4-92.9
DNA detection 136 241 44.7 31.5-55.6