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Hernández-Silva CD, Ramírez de Arellano A, Pereira-Suárez AL, Ramírez-López IG. HPV and Cervical Cancer: Molecular and Immunological Aspects, Epidemiology and Effect of Vaccination in Latin American Women. Viruses 2024; 16:327. [PMID: 38543693 PMCID: PMC10974876 DOI: 10.3390/v16030327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 05/23/2024] Open
Abstract
Cervical cancer is primarily caused by Human Papillomavirus (HPV) infection and remains a significant public health concern, particularly in Latin American regions. This comprehensive narrative review addresses the relationship between Human Papillomavirus (HPV) and cervical cancer, focusing on Latin American women. It explores molecular and immunological aspects of HPV infection, its role in cervical cancer development, and the epidemiology in this region, highlighting the prevalence and diversity of HPV genotypes. The impact of vaccination initiatives on cervical cancer rates in Latin America is critically evaluated. The advent of HPV vaccines has presented a significant tool in combating the burden of this malignancy, with notable successes observed in various countries, the latter due to their impact on immune responses. The review synthesizes current knowledge, emphasizes the importance of continued research and strategies for cervical cancer prevention, and underscores the need for ongoing efforts in this field.
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Affiliation(s)
- Christian David Hernández-Silva
- Departamento de Microbiología y Patología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Jalisco, Mexico; (C.D.H.-S.); (A.L.P.-S.)
| | - Adrián Ramírez de Arellano
- Instituto de Investigación en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Jalisco, Mexico;
| | - Ana Laura Pereira-Suárez
- Departamento de Microbiología y Patología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Jalisco, Mexico; (C.D.H.-S.); (A.L.P.-S.)
- Instituto de Investigación en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Jalisco, Mexico;
| | - Inocencia Guadalupe Ramírez-López
- Departamento de Ciencias de La Salud, CUValles, Universidad de Guadalajara, Guadalajara-Ameca Rd Km. 45.5, Ameca 46600, Jalisco, Mexico
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Zastawna B, Milewska A, Załuska R, Kozłowski R, Zastawna M, Marczak M. Analysis of Parents' Attitudes and Knowledge toward Immunization and How These Factors Influence Their Decisions to Vaccinate Their Children against Human Papilloma Virus (HPV). MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1755. [PMID: 37893473 PMCID: PMC10608555 DOI: 10.3390/medicina59101755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023]
Abstract
Background and objectives: Vaccination hesitancy is a growing problem associated with decreasing chances for the elimination of vaccine-preventable diseases through immunization. This research was conducted to learn about parents' attitudes toward vaccination, particularly against HPV, in the context of their beliefs and fears regarding immunization and the impact of these views on their children's vaccination decisions. An additional goal was to determine what views or convictions most often lead to the phenomenon of delaying or refusing vaccinations, especially HPV vaccines, in the surveyed community. Materials and Methods: An online questionnaire was conducted in which parents marked how they vaccinated their children with mandatory vaccinations and whether they took the opportunity to protect their children with additional vaccinations, including HPV and COVID-19. Respondents also marked the extent to which they agreed with the statements, regarding the safety of vaccinations, doubts about them, as well as popular anti-vaccine myths. Results: A total of 250 questionnaires were collected with data on the immunization of 425 children. Associations between specific beliefs and vaccine abstention were established. The most motivating factor for vaccination against HPV was the parent's awareness that the virus HP is the cause of cancer. The most inhibiting factor was respondent's compliance with the opinion that HPV vaccines can affect the child's sexual activity. Conclusions: The results indicate that information campaigns are needed, especially focusing on vaccine safety and the regularity and transparency of monitoring adverse effects. The obtained results will be used to create educational interventions against vaccination hesitancy more adapted to local conditions.
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Affiliation(s)
- Beata Zastawna
- Department of Management and Logistics in Health Care, Medical University of Lodz, 90-131 Lodz, Poland; (R.Z.); (R.K.)
| | - Anna Milewska
- Department of Statistics and Medical Informatics, Medical University of Bialystok, 15-089 Bialystok, Poland;
| | - Roman Załuska
- Department of Management and Logistics in Health Care, Medical University of Lodz, 90-131 Lodz, Poland; (R.Z.); (R.K.)
| | - Remigiusz Kozłowski
- Department of Management and Logistics in Health Care, Medical University of Lodz, 90-131 Lodz, Poland; (R.Z.); (R.K.)
| | - Martyna Zastawna
- Department of Psychology, SWPS University of Social Sciences and Humanities, 03-815 Warsaw, Poland;
| | - Michał Marczak
- Collegium of Management, WSB University in Warsaw, 03-204 Warsaw, Poland
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Huang C, Li C, Liu F, Xu R. Vaccination and risky behaviors: evidence from the hepatitis B vaccination campaign in China. JOURNAL OF POPULATION ECONOMICS 2023:1-32. [PMID: 37359470 PMCID: PMC9999080 DOI: 10.1007/s00148-023-00942-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/03/2023] [Indexed: 06/28/2023]
Abstract
Understanding the causal relationship between vaccination and individuals' risky behavioral responses has important policy implications as it affects the ultimate effectiveness of increasing access to vaccination. This paper examines the causal effects of vaccination on risky behaviors by exploring the 1992 hepatitis B vaccination campaign in China. Our empirical strategy exploits variations in age at the campaign as well as the pretreatment infection risks across provinces. Using a large cross-section of individuals born between 1981 and 1994, we find that more exposure to the hepatitis B vaccination leads to lower alcohol use during adulthood, and such impacts are almost entirely driven by men. Individuals from more educated families and people who live in urban areas tend to react more. Improved educational attainment and dissemination of related knowledge are important contributors. Our results uncover an unexpected benefit of promoting access to vaccination. Supplementary Information The online version contains supplementary material available at 10.1007/s00148-023-00942-4.
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Affiliation(s)
- Chen Huang
- Center for Human Capital and Labor Market Research, Central University of Finance and Economics, Beijing, 100081 China
| | - Cong Li
- School of Economics, Shanghai University of Finance and Economics, Shanghai, 200433 China
| | - Feng Liu
- School of Humanities and Social Science, Chinese University of Hong Kong, Shenzhen, 518172 Guangdong China
| | - Ruofei Xu
- School of Economics, Shanghai University of Finance and Economics, Shanghai, 200433 China
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Parental Justifications for Not Vaccinating Children or Adolescents against Human Papillomavirus (HPV). Vaccines (Basel) 2023; 11:vaccines11030506. [PMID: 36992090 DOI: 10.3390/vaccines11030506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/07/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Vaccination coverage against Human Papillomavirus (HPV) is low compared with uptake of other vaccines in many countries, including Brazil. The aim of this study was to examine the main reasons provided by parents or guardians of a target population that did not have the first dose of HPV vaccine in a small rural Brazilian municipality, and to verify the factors associated with the reasons for non-vaccination. This is a cross-sectional study with interviews based on the Health Belief Model (HBM), conducted with parents and guardians of 177 unvaccinated children or adolescents. The outcome of interest was the main reason for not vaccinating the child/adolescent. The exposure factors of interest were knowledge about HPV and its prevention as well as sociodemographic characteristics. The main justifications for not vaccinating were lack of information (62.2%), fear or refusal (29.9%), and logistical issues (7.9%). The justifications associated with adolescents’ sex, fear, or refusal were mentioned by 39.3% (95% CI: 28.8–50.6%) of parents or guardians of girls and by 21.5% (95% CI: 13.7–31.2%) of parents or guardians of boys. The main barrier to HPV vaccination is lack of information. Further training of health professionals in clarifying the benefits of vaccination and differentiating the risks between boys and girls could encourage uptake.
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Nogueira-Rodrigues A, Flores MG, Macedo Neto AO, Braga LAC, Vieira CM, de Sousa-Lima RM, de Andrade DAP, Machado KK, Guimarães APG. HPV vaccination in Latin America: Coverage status, implementation challenges and strategies to overcome it. Front Oncol 2022; 12:984449. [PMID: 36387151 PMCID: PMC9645205 DOI: 10.3389/fonc.2022.984449] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 10/10/2022] [Indexed: 12/24/2022] Open
Abstract
Cervical cancer remains a leading cause of morbidity and mortality amongst females in Latin America (LATAM). Cervical cancer is a preventable disease and HPV vaccination is a main key strategy towards its elimination. This study analyzes HPV vaccine implementation current status and the main barriers to achieve adequate coverage in the region. Data from the nineteen sovereign states of LATAM (comprised of all Portuguese and Spanish-speaking nations located south of the United States) were collected, including year of HPV vaccine implementation, gender and age targets, the number of doses included in the public program and coverage by dose. Sixteen out of the 19 evaluated countries have already implemented HPV vaccination programs. However, despite its proven efficacy and safety, HPV vaccine uptake in LATAM has been lower than expected. There is an evident decline in adhesion, mainly regarding the second dose. Several reasons are probably involved, of note: limited knowledge of HPV and HPV vaccine, misguided safety concerns, high cost, cultural barriers, and the Covid19 pandemic. Proper strategies to overcome these barriers are needed to ensure successful uptake. Effective policies are: adopting the one dose schedule, delivering the vaccine on both health center and schools, and advising health professionals to recommend the vaccine. Further research regarding HPV vaccine hesitancy in Latin America is needed.
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Affiliation(s)
- Angélica Nogueira-Rodrigues
- Department of Internal Medicine, Federal University of Minas Gerais, Belo Horizontel, Brazil
- *Correspondence: Angélica Nogueira-Rodrigues,
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Sun LX, Chen LL, Chen WY, Zhang MX, Yang MG, Mo LC, Zhu JJ, Tung TH, Li FP. Association between health behaviours and the COVID-19 vaccination: risk compensation among healthcare workers in Taizhou, China. Hum Vaccin Immunother 2022; 18:2029257. [PMID: 35175866 PMCID: PMC8993088 DOI: 10.1080/21645515.2022.2029257] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This study is conducted to explore the association between health behaviors and the COVID-19 vaccination based on the risk compensation concept among health-care workers in Taizhou, China. We conducted a self-administered online survey to estimate the health behaviors among the staff in a tertiary hospital in Taizhou, China, from May 18 to 21 May 2021. A total of 592 out of 660 subjects (89.7%) responded to the questionnaire after receiving an e-poster on WeChat. Subjects who had been inoculated with the COVID-19 vaccine were asked to mention the differences in their health behaviors before and after the vaccination. The results showed that there were no statistical differences in health behaviors between vaccinated and unvaccinated groups, except in terms of the type of gloves they used (62.8% in the vaccinated group and 49.2% in the unvaccinated group, p = .048). Subjects who received earlier COVID-19 vaccinations exhibited better health behaviors (22.40% increased for duration of wearing masks (P = .007), 25.40% increased for times of washing hands (P = .01), and 20.90% increased for times of wearing gloves (P = .01)). Subjects also revealed better health behaviors (washing hands, wearing gloves, and wearing masks) after vaccination compared to that before. In conclusion, concept of risk compensation was not applied in our findings. The health behaviors did not reduce after the COVID-19 vaccination, which even may improve health behaviors among health-care workers in the hospital setting.
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Affiliation(s)
- Liang-Xue Sun
- Department of Urology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Li-Li Chen
- Department of Nursing, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Wei-Ying Chen
- Department of Urology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Mei-Xian Zhang
- Evidence-based Medicine Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Meng-Ge Yang
- Department of Emergency, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Li-Cai Mo
- Department of Urology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Jing-Jing Zhu
- Department of Neunosurgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Tao-Hsin Tung
- Evidence-based Medicine Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Fei-Ping Li
- Department of Urology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
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