TY - JOUR
T1 - Effects of 2 and 3 Vaccinations With the Bivalent Human Papillomavirus (HPV) Vaccine on the Prevalence and Load of HPV in Clearing and Persistent Infections in Young Women
AU - van Eer, Kahren
AU - Middeldorp, Marit
AU - Dzebisasjvili, Tsira
AU - Lamkaraf, Najima
AU - de Melker, Hester E.
AU - Steenbergen, Renske D. M.
AU - King, Audrey J.
N1 - Funding Information: Financial support. This work was supported by the Dutch Ministry of Health, Welfare and Sports, The Netherlands. Publisher Copyright: © 2023 The Author(s). Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved.
PY - 2023/10/15
Y1 - 2023/10/15
N2 - BACKGROUND: Human papillomavirus (HPV) viral load (VL) is associated with persistence, which increases cervical cancer risk. The bivalent vaccine protects against oncogenic HPV-16/18 and cross-protects against several nonvaccine types. We examined the effect of 2-dose (2D) and 3-dose (3D) vaccination on HPV prevalence and VL in clearing infections and persistent infections, 6 years and 12 years postvaccination, respectively. METHODS: Vaginal swabs collected from the "HPV Amongst Vaccinated and Non-vaccinated Adolescents" study (HAVANA, 3D-eligible) and HAVANA-2 (2D-eligble) participants were genotyped for HPV with the SPF10-DEIA-LiPA25 system. HPV VL was measured with type-specific quantitative polymerase chain reaction (qPCR). RESULTS: HPV-16, -18, -31, -33, and -45 clearing and/or persistent infection prevalence and HPV-16, -18, and -31 VLs in clearing infections were significantly reduced in 3D-vaccinated women compared to unvaccinated women. Except for HPV-11 and -59 clearing infections, no significant VL differences were observed among vaccinated women, ≤6 and >6 years post-vaccination. Infection numbers were low in 2D-eligible women, with no HPV-16/18 in vaccinated women. No VL differences for the remaining types were found. CONCLUSIONS: 3D vaccination reduces HPV prevalence in clearing infections and persistent infections and decreases HPV VLs in clearing infections, 12 years post-vaccination for vaccine and several nonvaccine types. 2D-eligible women had low infection numbers, with no HPV-16/18 among vaccinated women.
AB - BACKGROUND: Human papillomavirus (HPV) viral load (VL) is associated with persistence, which increases cervical cancer risk. The bivalent vaccine protects against oncogenic HPV-16/18 and cross-protects against several nonvaccine types. We examined the effect of 2-dose (2D) and 3-dose (3D) vaccination on HPV prevalence and VL in clearing infections and persistent infections, 6 years and 12 years postvaccination, respectively. METHODS: Vaginal swabs collected from the "HPV Amongst Vaccinated and Non-vaccinated Adolescents" study (HAVANA, 3D-eligible) and HAVANA-2 (2D-eligble) participants were genotyped for HPV with the SPF10-DEIA-LiPA25 system. HPV VL was measured with type-specific quantitative polymerase chain reaction (qPCR). RESULTS: HPV-16, -18, -31, -33, and -45 clearing and/or persistent infection prevalence and HPV-16, -18, and -31 VLs in clearing infections were significantly reduced in 3D-vaccinated women compared to unvaccinated women. Except for HPV-11 and -59 clearing infections, no significant VL differences were observed among vaccinated women, ≤6 and >6 years post-vaccination. Infection numbers were low in 2D-eligible women, with no HPV-16/18 in vaccinated women. No VL differences for the remaining types were found. CONCLUSIONS: 3D vaccination reduces HPV prevalence in clearing infections and persistent infections and decreases HPV VLs in clearing infections, 12 years post-vaccination for vaccine and several nonvaccine types. 2D-eligible women had low infection numbers, with no HPV-16/18 among vaccinated women.
KW - bivalent vaccine
KW - clearing infection
KW - human papillomavirus
KW - persistent infection
KW - viral load
UR - http://www.scopus.com/inward/record.url?scp=85174751605&partnerID=8YFLogxK
U2 - https://doi.org/10.1093/infdis/jiad080
DO - https://doi.org/10.1093/infdis/jiad080
M3 - Article
C2 - 36988110
SN - 0022-1899
VL - 228
SP - 1012
EP - 1022
JO - The Journal of Infectious Diseases
JF - The Journal of Infectious Diseases
IS - 8
ER -