Acceptability of Human Papillomavirus (HPV) Vaccine in Female Sex Workers

NCT ID: NCT00925288

Last Updated: 2012-10-11

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-10-31

Study Completion Date

2011-08-31

Brief Summary

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The primary objectives of this study are to determine the acceptance and potential for the effective use of HPV vaccine in the standard and a modified schedule in female sex workers. Secondary objectives include ascertaining the prevalence of HPV types among female sex workers by age and sexual experience.

Detailed Description

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FSWs are at higher risk of HPV infection and presumably cervical cancer, and the recently available vaccine has been shown to protect against persistent infection from these types. If this study gives evidence showing the vaccine is acceptable in preventing cervical HPV infection by types 16 and 18 in this population, then the burden of cervical cancer and cancer precursors could be drastically decreased through widespread vaccination of this target group. Vaccination at the point of entry of brothel based sex work may become a requirement to lower the burden of cervical cancer among FSWs and also among all other sex partners of clients of FSWs. A modified schedule may prove beneficial for FSWs in Peru to complete the vaccine regimen.

Conditions

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Human Papillomavirus Infection

Keywords

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Female sex worker Peru Cervical infection Cervical abnormality Serum antibody Vaccine acceptance Alternative schedule Viral infections Human papillomavirus vaccine Human papillomavirus (HPV) non inferiority

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Regular schedule

Duration: Gardasil HPV vaccine administered intramuscularly at 0,2,6 months

Group Type ACTIVE_COMPARATOR

Gardasil

Intervention Type BIOLOGICAL

Dosage Form: 0.5 ml intramuscular injection Dosage: Gardasil 0.5ml suspension Frequency: 3 doses

Modified Schedule

Duration: Gardasil HPV vaccine administered intramuscularly at 0,3,6 months

Group Type EXPERIMENTAL

Gardasil

Intervention Type BIOLOGICAL

Dosage Form: 0.5 ml intramuscular injection Dosage: Gardasil 0.5ml suspension Frequency: 3 doses

Interventions

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Gardasil

Dosage Form: 0.5 ml intramuscular injection Dosage: Gardasil 0.5ml suspension Frequency: 3 doses

Intervention Type BIOLOGICAL

Other Intervention Names

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Human Papillomavirus Quadrivalent Vaccine

Eligibility Criteria

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Inclusion Criteria

* Between the age of 18 and 26 years
* Registered female sex worker living in Lima
* Healthy with no known immune deficiency
* Willing to participate in a study of HPV vaccine including a Pap smear, three pregnancy tests, blood draws, and three vaccine administrations over 7 months
* Willing to provide informed consent

Exclusion Criteria

* Currently pregnant or planning to get pregnant in the next six months
* Known immune deficiency disorder
* Current receipt of immunosuppressive drugs
* Allergy to yeast or known contraindication to HPV vaccine
* Women who have had their cervix removed
* Previous HPV vaccination
* Current fever over 100 degrees Fahrenheit
Minimum Eligible Age

18 Years

Maximum Eligible Age

26 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role collaborator

NGO Via Libre

OTHER

Sponsor Role collaborator

Universidad Peruana Cayetano Heredia

OTHER

Sponsor Role collaborator

Johns Hopkins Bloomberg School of Public Health

OTHER

Sponsor Role lead

Responsible Party

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Neal Halsey

Professor of International Health

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Neal Halsey, MD

Role: PRINCIPAL_INVESTIGATOR

Johns Hopkins Bloomberg School of Public Health

Locations

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NGO Via Libre

Lima, Lima Province, Peru

Site Status

Countries

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Peru

References

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Other Identifiers

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IRB00001625

Identifier Type: -

Identifier Source: secondary_id

Merck IISP 35706

Identifier Type: -

Identifier Source: org_study_id