Journal
EMERGING INFECTIOUS DISEASES
Volume 26, Issue 10, Pages 2387-2393Publisher
CENTERS DISEASE CONTROL & PREVENTION
DOI: 10.3201/eid2610.191646
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Funding
- National Science and Technology Major Project [2015ZX09101034]
- National Natural Science Foundation of China [81673240, 81601805]
- Scientific Research Foundation of State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics [2018ZY001]
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Little is known about the risk for acquiring a concordant human papillomavirus (HPV) infection in a genital (or anal) site after an anal (or genital) HPV infection. We collected 3 sets of anogenital specimens at 6-month intervals from 2,309 men and 2,378 women in Liuzhou, China, and tested these specimens for HPV. The risk for sequential anal HPV infection in participants with a previous genital HPV infection was higher than for participants without an infection (hazard ratio [HR] 4.4, 95% CI 3.4-5.8 for women and HR 2.6, 95% CI 1.4-4.6 for men). For sequential genital HPV infection, women with a previous anal infection had a higher risk (HR 1.9, 95% CI 1.2-3.1), but no major difference was found for men (HR 0.7, 95% CI 0.2-1.9). Our study indicates that autoinoculation might play a major role in anogenital HPV transmission, in addition to direct sexual intercourse, especially for anal infection in women.
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