Cobertura da vacinação contra papilomavírus humano no Nordeste do Brasil, 2013-2021: estudo descritivo / Human papillomavirus vaccination coverage in Northeast Brazil, 2013-2021: a descriptive study / Cobertura de vacunación contra el virus del papiloma humano en el Nordeste de Brasil, 2013-2021: un estudio descriptivo

Objetivo: descrever a cobertura da vacina contra papilomavírus humano (HPV) na região Nordeste do Brasil, no período de 2013 a 2021. Métodos: estudo descritivo conduzido com dados obtidos do Programa Nacional de Imunizações, que estabelece a meta de 80% para a vacina contra o HPV para meninas entre 9 e 14 anos e meninos entre 11 e 14 anos. Resultados: as coberturas para as meninas foram de 73,9%, na primeira, e de 54,3% na segunda dose, e para meninos, as coberturas de cada dose foram de 49,7% e 32,6%, respectivamente; excetuando-se Ceará e Paraíba, que alcançaram coberturas acima de 80% na primeira dose para as meninas, nenhum estado alcançou a meta para as duas doses. Conclusões: entre 2013 e 2021, as coberturas da vacina contra HPV estiveram abaixo da meta para ambos os sexos, com exceção de Ceará e Paraíba, que atingiram a meta para a primeira dose no grupo de meninas.

Objective: to describe human papillomavirus (HPV) vaccination coverage in the Northeast region of Brazil, in the period from 2013 to 2021. Methods: this was a descriptive study conducted with data obtained from the National Immunization Program, which sets a goal of 80% coverage of HPV vaccination in girls aged between 9 and 14 years and boys aged between 11 and 14 years. Results: HPV vaccination coverage in girls was 73.9%, regarding the first dose, and 54.3% regarding the second dose, and for boys, the coverage of each dose was 49.7% and 32.6%, respectively; with the exception of the states of Ceará and Paraíba, which reached coverage above 80% regarding the first dose in girls, none of the states reached the goal for both doses. Conclusions: between 2013 and 2021, HPV vaccination coverage was below the target for both sexes, with the exception of the states of Ceará and Paraíba, which reached the goal for the first dose in the girls.

Objetivo: describir las coberturas de la vacuna contra el papilomavirus humano en la Región Nordeste de Brasil y sus estados, de 2013 a 2021. Métodos: se trata de un estudio descriptivo realizado con datos de cobertura vacunal obtenidos del Programa Nacional de Immunizaciones, que establece la meta del 80% para la vacuna. Los datos de población se obtuvieron del Departamento de Informática del Ministerio de Salud. Resultados: la cobertura de vacunación en niñas fue del 73,9% en la primera y del 54,3% en la segunda dosis; en niños la cobertura de cada dosis fue del 49,7% y 32,6%; Ceará y Paraíba alcanzaron una cobertura superior al 80% para la primera dosis en niñas, y ningún estado alcanzó la meta para las dos dosis. Conclusiones: la cobertura de la vacuna está por debajo de la meta para ambos sexos, con excepción de la primera dosis en niñas en Ceará y Paraíba.

Can quadrivalent human papillomavirus prophylactic vaccine be an effective alternative for the therapeutic management of genital warts? an exploratory study

ABSTRACT Objective: To evaluate the treatment effect of genital warts, we investigated the quadrivalent HPV vaccine injection compared with surgical excision. Materials and Methods: This prospective study included 26 patients (M:F = 24:2) who received HPV vaccine or surgical excision. After explanation of surgical excision or HPV vaccine, 16 patients underwent surgical excision and the others received HPV vaccine injections. Based on gross findings of genital warts, treatment outcomes were classified as complete response (no wart), partial response, and failed treatment. Results: Among enrolled patients, 42% (11 / 26) patients had recurrent genital warts. In vaccination group, complete response rates of genital wart were 60% following 3 times HPV vaccine. Partial response patients wanted to excise the genital lesions before the 3 times injection, because they worried about sexual transmission of disease to their sexual partners. One patient underwent surgical excision after 3 times injection. Excision sites included suprapubic lesions, but other sites including mid-urethra and glans showed complete response after injection. At a mean follow-up period of 8.42 ± 3.27 months, 10 patients (100%) who received HPV vaccine did not show recurrence. Conclusion: The response rates after HPV vaccine injection were 90% (complete and partial). Our results suggested that HPV vaccines could be effective in management of genital warts.

Policies and processes for human papillomavirus vaccination in Latin America and the Caribbean / Políticas y procesos relacionados con la vacunación contra el virus del papiloma humano en América Latina y el Caribe / Políticas e processos para vacinação para papilomavírus humano na América Latina e Caribe

Objectives Three highly effective vaccines are available to prevent human papillomavirus (HPV) infection, and they have been introduced in many countries around the world. This article describes advances and challenges in introducing HPV vaccines in the Expanded Program of Immunization (EPI) of countries in Latin America and the Caribbean (LAC). Methods We reviewed national and regional sources of information to identify LAC countries with and without universal HPV vaccination, along with the year of introduction, type of HPV vaccine, vaccination scheme, age groups targeted, and coverage level reached. Incidence rates of cervical cancer were compared across countries with and without an HPV vaccination program, in order to identify inequities in access to HPV vaccines. Results So far, 10 LAC countries have supplied data on their vaccination policies and vaccination coverage rates to the Pan America Health Organization. The majority of those 10 started their vaccination programs using quadrivalent vaccine. Only Chile, Ecuador, and Mexico started their programs using a two-dose scheme. However, by the end of 2016, most of the other countries had switched from a three-dose to a two-dose scheme. Different age groups are targeted in the various programs. Some countries vaccinate one-year birth cohorts, while others vaccinate multiple-year birth cohorts. By the end of 2014, coverage with at least two doses ranged from a low of 2% to a high of 86%. With the exception of Venezuela, the LAC countries with the largest populations introduced universal HPV vaccination between 2010 and 2014. Despite the progress that has occurred in some LAC countries, there are still 10 LAC nations with cervical cancer rates above the LAC average (21.2 cases per 100 000) that have not introduced an HPV vaccine in their EPI. Conclusions With several key adjustments, HPV vaccination programs across Latin America and the Caribbean could be substantially strengthened. Ongoing monitoring of HPV infection outcomes is needed in order to assess the impact of different vaccination policies.

RESUMEN Objetivos Existen tres vacunas de gran eficacia para prevenir la infección por el virus del papiloma humano (VPH) que se han introducido en muchos países en todo el mundo. En el presente artículo se describen los progresos alcanzados y las dificultades encontradas con la introducción de las vacunas contra el VPH en el Programa Ampliado de Inmunización de los países de América Latina y el Caribe. Métodos Se examinaron las fuentes de información nacionales y regionales con el fin de definir los países de América Latina y el Caribe que cuentan con la vacunación universal contra el VPH o que carecen de ella, además del año de introducción, el tipo de vacuna utilizada, el calendario de vacunación, los grupos de edad destinatarios y el grado de cobertura alcanzado. Se compararon las tasas de incidencia del cáncer cervicouterino entre los países que poseen un programa de vacunación contra el VPH y los países que no lo tienen, con el propósito de detectar las inequidades en el acceso a estas vacunas. Resultados Hasta el momento, diez países de América Latina y el Caribe han comunicado a la Organización Panamericana de la Salud los datos sobre sus políticas de vacunación y las tasas de cobertura. La mayoría de estos países comenzó sus programas de vacunación utilizando la vacuna tetravalente. Solo Chile, Ecuador y México iniciaron su programa con la aplicación de un esquema de dos dosis. Sin embargo, a fines del 2016 la mayoría de los demás países había pasado de un calendario de tres dosis a una pauta de dos dosis. Los programas se dirigen a diferentes grupos de edad. Algunos países vacunan cohortes de nacimiento de un año y otros vacunan cohortes de nacimiento de varios años. A fines del 2014, la cobertura con al menos dos dosis oscilaba entre un 2% y un 86%. Con la excepción de Venezuela, los países de América Latina y el Caribe con poblaciones más grandes introdujeron la vacunación universal contra el VPH del 2010 al 2014. Pese a los progresos alcanzados en algunos países existen todavía diez naciones en América Latina y el Caribe, cuyas tasas de cáncer cervicouterino son superiores al promedio de la Región (21,2 casos por 100 000 habitantes), que no han integrado la vacuna contra el VPH en su Programa Ampliado de Inmunización. Conclusiones Será necesario adoptar varias modificaciones esenciales con miras a fortalecer de manera sólida los programas de vacunación contra el VPH en América Latina y el Caribe. Es preciso llevar a cabo un seguimiento continuo de los resultados en materia de infección por el VPH que permita evaluar la repercusión de las diferentes políticas de vacunación.

RESUMO Objetivos Existem três vacinas bastante eficazes para prevenir a infecção pelo papilomavírus humano (HPV) que foram introduzidas em diversos países em todo o mundo. Este artigo descreve os avanços e os desafios para introduzir as vacinas contra HPV no Programa Ampliado de Imunização (PAI) dos países na América Latina e Caribe. Métodos Foram pesquisadas fontes de informação nacionais e regionais para identificar os países da América Latina e Caribe com e sem um programa de vacinação universal para HPV, assim como ano de introdução da vacina, tipo de vacina usada, esquema de vacinação, faixas etárias cobertas e nível de cobertura alcançado. Foram comparadas as taxas de incidência do câncer do colo uterino entre os países com e sem programa de vacinação a fim de identificar desigualdades de acesso à vacina contra HPV. Resultados Até o presente, 10 países da América Latina e Caribe forneceram dados sobre suas políticas de vacinação e taxas de cobertura de vacinação à Organização Pan-Americana da Saúde. A maioria iniciou introduzindo no programa de vacinação a vacina quadrivalente. Somente o Chile, Equador e México começaram seus programas com um esquema de duas doses. Porém, ao final de 2016, grande parte dos demais países havia migrado de um esquema de três para duas doses. As faixas etárias cobertas variam nos diversos programas: alguns países vacinam coortes de crianças com um ano de idade, outros vacinam coortes de crianças com idades variadas. Ao final de 2014, a cobertura com a aplicação de pelo menos duas doses da vacina variou de um nível bem baixo de 2% a um nível elevado de 86%. À exceção da Venezuela, os países mais populosos da América Latina e Caribe introduziram a vacinação universal para HPV entre 2010 e 2014. Apesar do progresso verificado, 10 nações onde foram registradas taxas de incidência de câncer do colo uterino acima da média da região (21,2 casos por 100.000 habitantes) ainda não introduziram a vacina contra HPV no próprio PAI. Conclusões Se forem tomadas várias medidas importantes, é possível reforçar consideravelmente os programas de vacinação para HPV na América Latina e Caribe. O monitoramento contínuo dos resultados se faz necessário para avaliar o impacto das políticas de vacinação.

Safety, tolerability and side effects of human papillomavirus vaccines: a systematic quantitative review

Recently, many studies have evaluated HPV vaccine safety and adverse effects. Two vaccine shave been recently evaluated in randomized controlled trials: the bivalent vaccine for HPV 16 and 18 (Cervarix, GlaxoSmithKline Biologicals, Rixensart, Belgium) and the quadrivalent vaccine for HPV 6, 11, 16, and 18 (Gardasil, Merck and Co., Inc., Whitehouse Station, NJ). We have performed a systematic review of all randomized controlled trials in which HPV vaccines were compared with placebo regarding safety, tolerability and adverse effects. Studies were searched up to March 2013 in the databases: Pubmed, Embase, Scielo and Cancerlit. Odds Ratios (OR) of most incident adverse effects were obtained. Twelve reports, involving 29,540 subjects, were included. In the HPV 16/18 group, the most frequently reported events related to the vaccine were pain (OR 3.29; 95% CI: 3.00–3.60), swelling (OR 3.14; 95% CI: 2.79–3.53) and redness (OR 2.41; 95% CI: 2.17–2.68). For the HPV 6/11/16/18 group the events were pain (OR 2.88; 95% CI: 2.42–3.43) and swelling (OR 2.65; 95% CI: 2.0–3.44). Concerning the HPV 16/18 vaccine, pain was the most common outcome detected. These effects can be due to a possible VLP-related inflammation process. Fatigue was the most relevant general effect observed followed by fever, gastrointestinal symptoms, and headache. In the HPV 6/11/16/18 group, only general symptoms, pain and swelling were observed. Pain and swelling were the most frequent. Comparing HPV 16/18 to HPV 6/11/16/18 vaccines, the former presented more adverse effects, perhaps because there are many more trials evaluating the bivalent vaccine. Other studies are needed to clarify this issue.

Vacina como agente de imunização contra o HPV / Vaccines as an agent for immunization against HPV

Considerada uma infecção de alta prevalência em todo o mundo, o papiloma vírus humano (HPV) é um DNA vírus que infecta a mucosa genital e possui grande potencial oncogênico, sendo relacionado ao risco aumentado de lesões do trato genital inferior, como o câncer cervical. Este câncer é responsável pela morte de cerca de 231 mil mulheres por ano no mundo, o que torna o HPV um grande problema para a saúde pública. Sabendo que a maneira mais eficaz e com melhor custo-benefício para controlar uma doença infecciosa é o desenvolvimento de vacinas, duas profiláticas foram desenvolvidas e aprovadas no Brasil, uma bivalente e outra quadrivalente. Essa revisão de literatura se propõe a apresentar as características do vírus HPV, os tipos de vacinas presentes no mercado, suas indicações e contraindicações, seus efeitos adversos, sua eficácia, seus títulos de anticorpos (GMT) e seu custo-efetividade.

Considered a highly prevalent infection throughout the world, the human papillomavirus (HPV) is a DNA virus that infects the genital mucosa and has high carcinogenic potential, being related to an increased risk of lower genital tract lesions, such as cervical cancer. This cancer is responsible for the deaths of about 231,000 women per year worldwide, which means that HPV is a major problem for public health. Knowing that the most effective and cost-effective way to control an infectious disease is the development of vaccines, two prophylactic vaccines have been developed and approved in Brazil, one of which is bivalent and the other is tetravalent. This review of the literature seeks to present the characteristics of the HPV virus, types of vaccines available on the market, their indications and contraindications, their adverse effects, their effectiveness, their geometric mean titer (GMT) and their cost-effectiveness.

Efficacy and safety of human papilloma virus vaccine in cervical cancer prevention: systematic review and meta-analysis / Eficacia y seguridad de la vacuna contra el virus de papiloma humano para la prevención del cáncer de cuello uterino: revisión sistemática y metaanálisis

Introduction. Cervical cancer is the third most common cancer worldwide. The human papilloma virus (HPV) has been identifed as the etiologic agent of cervical and other anogenital cancers. The aim was to perform a systematic review and meta-analysis to evaluate the efficacy and safety of HPV vaccines in preventing cervical intraepithelial neoplasias (CIN) grades 2 and 3, adenocarcinoma in situ (CIN2+) and cervical cancer. Materials and Methods. Major bibliographic databases were searched in July 2011 without any temporal nor language restrictions. Randomizedcontrolled trials that evaluated the efficacy of HPV vaccines against CIN2+ and cervical cancer were included. Results. Four of the 168 publications found were included in a meta-analysis. Among vaccinated women, the relative risk (RR) of developing CIN2+ lesions was 0.45 (95% CI 0.38 to 0.54) for HPV 16, 0.14 (0.08 to 0.25) for HPV 18, and 0.79 (0.68 to 0.93) for oncogenic serotypes not included in the vaccines 31/33/45/52/58. All studies had acceptable safety profiles. Conclusions. Vaccines currently available are effective, safe and capable of preventing CIN2+ lesions, although long term efficacy has not yet been fully tested.

Introducción. El cáncer de cuello uterino es el tercer tipo de cáncer en frecuencia en el mundo. El virus de papiloma humano (HPV, por su sigla en inglés) se ha identificado como causa de éste y otros cánceres anogenitales. El objetivo del presente trabajo es evaluar, mediante una revisión sistemática y metaanálisis, la eficacia y seguridad de las vacunas contra HPV para la prevención de neoplasias intraepiteliales (CIN) de grados 2, 3 y adenocarcinoma in situ (CIN2+) y el cáncer de cuello uterino. Materiales y métodos. Se realizó una búsqueda sistemática en las principales bases de datos durante julio de 2011 sin restricciones temporales o idiomáticas. Se incluyeron ensayos clínicos controlados aleatorizados que evaluaran la eficacia de la vacuna contra el desarrollo de CIN2 + y cáncer de cuello uterino. Resultados. Se confeccionó un metaanálisis con 4 de las 168 publicaciones halladas. Mediante el análisis por intención de tratar se observó, para mujeres vacunadas, un riesgo relativo (RR) de contraer lesiones CIN2+ asociadas a HPV 16 de 0,45 (IC 95% 0,38-0,54); a HPV 18 de 0,14 (0,08-0,25) y por serotipos oncogénicos 31/33/45/52/58 no incluidos en la vacuna de 0,79 (0,68-0,93). Todos los estudios mostraron perfiles de seguridad aceptables. Conclusiones. Las vacunas disponibles actualmente mostraron ser eficaces y seguras para la prevención de lesiones CIN2+; sin embargo, resta probar su eficacia a largo plazo.

Production of L1 protein from different types of HPV in Pichia pastoris using an integrative vector

Human papillomavirus (HPV) infection is the most common sexually transmitted disease in the world and is related to the etiology of cervical cancer. The most common high-risk HPV types are 16 and 18; however, the second most prevalent type in the Midwestern region of Brazil is HPV-33. New vaccine strategies against HPV have shown that virus-like particles (VLP) of the major capsid protein (L1) induce efficient production of antibodies, which confer protection against the same viral type. The methylotrophic yeast Pichia pastoris is an efficient and inexpensive expression system for the production of high levels of heterologous proteins stably using a wild-type gene in combination with an integrative vector. It was recently demonstrated that P. pastoris can produce the HPV-16 L1 protein by using an episomal vector associated with the optimized L1 gene. However, the use of an episomal vector is not appropriate for protein production on an industrial scale. In the present study, the vectors were integrated into the Pichia genome and the results were positive for L1 gene transcription and protein production, both intracellularly and in the extracellular environment. Despite the great potential for expression by the P. pastoris system, our results suggest a low yield of L1 recombinant protein, which, however, does not make this system unworkable. The achievement of stable clones containing the expression cassettes integrated in the genome may permit optimizations that could enable the establishment of a platform for the production of VLP-based vaccines.

A eficácia da vacina profilática contra o HPV nas lesões HPV induzidas / Efficacy of the prophylactic vaccination against HPV induced lesions

A possibilidade de redução do câncer de colo uterino com a utilização da vacina profilática contra o HPV é uma perspectiva mundial. O presente estudo teve por objetivo avaliar a eficácia da vacinação profilática contra o vírus do HPV na redução das lesões HPV induzidas em mulheres. Foi realizada revisão sistemática, incluindo todos os artigos encontrados até janeiro de 2009, combinando os descritores para cada base de dados específica, para alcançar maior sensibilidade na busca da intervenção (vacina profilática), população (mulheres) e desfecho (lesão associada ao HPV). Os 2.395 estudos encontrados foram submetidos à rigorosa avaliação e selecionados a partir de sua qualidade metodológica. A avaliação quantitativa dos quatro estudos analisados não foi possível pela heterogeneidade dos dados computados. A vacina profilática contra o HPV tem alta eficácia em curto período de tempo. É necessário maior período de observação antes de sua incorporação na rede pública de saúde

The possibility of cervical cancer reduction with the use of prophylactic vaccine against HPV is a global perspective. This study aimed at assessing the effectiveness of vaccination against HPV virus in the decrease of HPV induced lesions in women. A systematic review was performed, including all studies published until January 2009, combining descriptors for each database to achieve greater sensitivity in the search for intervention (prophylactic vaccines), population (women) and outcome (HPV induced lesions). The 2,395 studies were submitted to rigorous evaluation and selected from their methodological quality. The quantitative evaluation of four studies was not possible, due to the heterogeneity of data. The prophylactic vaccine against HPV is highly effective in a short period of time. Before its incorporation in public health, a longer period of observation is necessary

Cervical cancer prevention & the role of human papillomavirus vaccines in India.

Human papillomavirus (HPV) is a necessary cause of cervical cancer, the leading cause of cancer deaths among Indian women. Current screening and prevention programs based on cytology have not been effective in reducing the disease burden. Two vaccines are now available for primary prevention. They generate neutralizing antibodies to HPV capsid protein. The vaccines have been shown to confer nearly 100 per cent protection against cervical pre-cancers and genital warts caused by HPV types 16/18 in HPV naïve population with few or no side effects. Though there is some cross-protection, around 30 per cent of cervical cancers will not be prevented by the vaccine. Vaccination and screening, which are complementary and synergistic, now constitute the new paradigm for prevention of this disease.

HPV vaccination: the promise & problems.

Four-fifths of the cervical cancer burden in the world is experienced in developing countries. HPV genotypes 16 and 18 account for 70 per cent of cervical cancers and currently available vaccines targeting these two types confer a high degree of protection against HPV 16/18 infection and related cervical precancerous lesions. However, widespread implementation of HPV vaccination programs are challenged by the unaffordable high costs of the vaccines and the lack of effective vaccine delivery platforms for sexually naïve girls. Other unresolved issues include long-term protection, cross-protection against HPV types not included in the vaccine and whether booster doses will be needed. Sensitivities associated with a vaccine preventing a sexually transmitted infection in girls, lack of awareness, public demand and political will, lack of coordination between cancer control, sexual and reproductive health and vaccine delivery services are additional challenges. Reduced costs, simple vaccine regimes and strengthening vaccine delivery platforms for adolescents should eventually facilitate HPV vaccine introduction in developing countries.

Can cervical cancer be eradicated by prophylactic HPV vaccination: Challenges to vaccine implementation.

Cervical cancer is the first cancer to be shown to be 100 per cent attributable to a virus; oncogenic human papillomaviruses (HPV), particularly types 16 and 18, collectively worldwide contribute to 70 per cent squamous cell carcinomas, 85 per cent of adenocarcinomas. Cervical cancer is the second commonest cancer of women, yet largely preventable with high-quality, well-organized screening of the appropriate population. Screening programmes are either nonexistent, or function opportunistically in many poorer countries, resulting in high incidence and mortality. Recently developed, prophylactic HPV vaccines against HPV 16, 18, as cervical cancer preventative vaccines, in phase 3 clinical trials have been shown, to be highly efficacious, safe and immunogenic. With the potential for cross protection against related HPV types, estimates for prevention are in the order of 75 to 80 per cent. Thus a further option exists in the battle to reduce these cancers in women. Challenges however include implementing a vaccination programme with wide coverage to the target populations to be a successful public health tool, integration and maintenance of current screening programmes where they are in existence, the need for reduced costs of the current vaccines, long-term immunogenicity (will there be a need for further doses?), appropriate education messages to the general community, governments, as well as the medical profession.

HPV vaccination: the beginning of the end of cervical cancer? - A Review

Human papillomavirus (HPV) is responsible for all cases of cervical cancer, as well as a great percentage of other anogenital tumors and oropharyngeal tumors. Since the main etiologic factor for these diseases is a virus, prophylactic measures are the best way to reduce the burden caused by the infection and associated disease. This review brings up to date information on the two commercially available prophylactic HPV vaccines against HPV, as well as presenting the ongoing research on HPV peptide, protein and dendritic cell based therapeutic vaccines.

Declaración del Comité Consultivo de Inmunizaciones de la Sociedad Chilena de Infectología respecto a la vacuna anti-virus papiloma humano: septiembre 2008 / Human papillomavirus vaccine: statement of the Consultive Committee of Immunizations on behalf of The Chilean Infectious Diseases Society: September 2008

The article briefly reviews the epidemiology of human papillomavirus (HPV) infection and associated diseases in the world and in Chile and the scientific information of the licensed HPV vaccines: Gardasil® and Cervarix®. Considering the available information, the Consultive Committee of Immunizations of the Chilean Society of Infectious Diseases, summarizes its conclusions and makes recommendations for vaccination against HPV in Chile.

El artículo revisa brevemente la epidemiología de las infecciones por virus papiloma humano (VPH) y las enfermedades asociadas, tanto en el mundo como en Chile y la información científica de las vacunas contra VPH licenciadas: Gardasil® y Cervarix®. Considerando la información disponible, el Comité Consultivo de Inmunizaciones de la Sociedad Chilena de Infectología, resume sus conclusiones y hace sus recomendaciones para la vacunación contra VPH en Chile.

Declaración del Comité Consultivo de Inmunizaciones de la Sociedad Chilena de Infectología respecto a la vacuna antivirus papiloma humano: Septiembre 2008 / Human papillomavirus vaccine: Statement of the Advisory Committee of Immunizations on Behalf of the Chilean Infectious Diseases Society: September 2008

This article briefly reviews the epidemiology of human papillomavirus (HPV) infection and associated diseases globally and in Chile, and the scientific ínformatíon of the licensed HPV vaccines: Gardasil® and Cervarix®. Considering the available information, the Advisory Committee on Immunizations of the Chilean Society of Infectious Diseases recommends vaccination of teenage girls, ideally before initiating sexual actívíty, Le. approximately at the age of 12 to 13 years and vaccination of women of any age if they have not started sexual activity. If women are vaccinated after initiating sexual activity, they should be informed of the lower efficacy of immunization if HPV infection has occurred. Education on responsible sexuality and sexually transmitted diseases should be maintained as a priority. Vaccination should be highly considered for inclusion in the National Immunization Program.