Table 4.

Reappearance of cervical HPV-6,11, 16, 18, 31, 33, 35, 45, 52, 58, and 59 infections following a period nondetection

HPV type (n = 827)Proportion of infections reappearing by 12 mo* (95% CI)Proportion of infections reappearing by 24 mo* (95% CI)Proportion of infections reappearing by 36 mo* (95% CI)
HPV-6 (n = 89)0.0 (−)1.7 (0.2-11.2)16.1 (5.6-41.1)
HPV-11 (n = 11)9.1 (1.3-49.2)9.1 (1.3-49.2)9.1 (1.3-49.2)
HPV-16 (n = 162)6.6 (3.6-11.9)7.5 (5.2-13.3)11.0 (6.1-19.4)
HPV-18 (n = 70)5.8 (2.2-14.8)8.8 (3.5-20.8)8.8 (3.5-20.8)
HPV-31 (n = 112)6.8 (3.3-13.7)6.8 (3.3-13.7)6.8 (3.3-13.7)
HPV-33 (n = 33)3.0 (0.4-19.6)7.9 (1.9-29.0)7.9 (1.9-29.0)
HPV-35 (n = 26)0.0 (−)0.0 (−)0.0 (−)
HPV-45 (n = 53)3.8 (1.0-14.3)3.8 (1.0-14.3)3.8 (1.0-14.3)
HPV-52 (n = 100)6.4 (2.9-13.6)6.4 (2.9-13.6)6.4 (2.9-13.6)
HPV-58 (n = 55)2.3 (0.3-15.4)2.3 (0.3-15.4)2.3 (0.3-15.4)
HPV-59 (n = 116)5.4 (2.5-11.7)7.5 (3.4-16.0)7.5 (3.4-16.0)
  • *These monthly intervals refer to time from the date of the second negative cervical swab following the initial infection. The actual time from infection nondetection corresponding to these data is therefore ∼8 mo longer (is 9-21, 21-33, and 33-45 mo following nondetection).