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Are two doses of human papillomavirus vaccine sufficient for girls aged 15–18 years? Results from a cohort study in India

Overview of attention for article published in Tumour Virus Research, March 2018
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Title
Are two doses of human papillomavirus vaccine sufficient for girls aged 15–18 years? Results from a cohort study in India
Published in
Tumour Virus Research, March 2018
DOI 10.1016/j.pvr.2018.03.008
Pubmed ID
Authors

Neerja Bhatla, Bhagwan M. Nene, Smita Joshi, Pulikottil O. Esmy, Usha Rani Reddy Poli, Geeta Joshi, Yogesh Verma, Eric Zomawia, Sharmila Pimple, Priya R. Prabhu, Partha Basu, Richard Muwonge, Sanjay Hingmire, Catherine Sauvaget, Eric Lucas, Michael Pawlita, Tarik Gheit, Kasturi Jayant, Sylla G. Malvi, Maqsood Siddiqi, Angelika Michel, Julia Butt, Subha Sankaran, Thiraviam Pillai Rameshwari Ammal Kannan, Rintu Varghese, Uma Divate, Martina Willhauck-Fleckenstein, Tim Waterboer, Martin Müller, Peter Sehr, Alka Kriplani, Gauravi Mishra, Radhika Jadhav, Ranjit Thorat, Massimo Tommasino, M. Radhakrishna Pillai, Rengaswamy Sankaranarayanan, for the Indian HPV vaccine study group

Abstract

Extending two-dose recommendations of HPV vaccine to girls between 15-18 years will reduce program cost and improve compliance. Immunogenicity and vaccine targeted HPV infection outcomes were compared between 1795 girls aged 15-18 years receiving two (1-180 days) and 1515 girls of same age receiving three (1-60-180 days) doses. Immunogenicity outcomes in 15-18 year old two-dose recipients were also compared with the 10-14 year old three-dose (N=2833) and two-dose (N=3184) recipients. The 15-18 year old two-dose recipients had non-inferior L1-binding antibody titres at seven months against vaccine-targeted HPV types compared to three-dose recipients at 15-18 years and three-dose recipients at 10-14 years of age. Neutralizing antibody titres at 18 months in 15-18 year old two-dose recipients were non-inferior to same age three-dose recipients for all except HPV 18. The titres were inferior to those in the 10-14 year old three-dose recipients for all targeted types. Frequency of incident infections from vaccine-targeted HPV types in the 15-18 year old two-dose recipients was similar to the three dose recipients. None of the girls receiving two or three doses had persistent infection from vaccine-targeted types. These findings support that two doses of HPV vaccine can be extended to girls aged 15-18 years.

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Geographical breakdown

Country Count As %
Unknown 84 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 15 18%
Researcher 10 12%
Professor 6 7%
Other 5 6%
Student > Ph. D. Student 5 6%
Other 14 17%
Unknown 29 35%
Readers by discipline Count As %
Medicine and Dentistry 17 20%
Nursing and Health Professions 9 11%
Biochemistry, Genetics and Molecular Biology 5 6%
Immunology and Microbiology 4 5%
Pharmacology, Toxicology and Pharmaceutical Science 3 4%
Other 11 13%
Unknown 35 42%