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Alshammari AH, Ishii H, Hirotsu T, Hatakeyama H, Morishita M, di Luccio E. Bridging the gap in cervical cancer screening for underserved communities: MCED and the promise of future technologies. Front Oncol 2024; 14:1407008. [PMID: 39135996 PMCID: PMC11317246 DOI: 10.3389/fonc.2024.1407008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 07/09/2024] [Indexed: 08/15/2024] Open
Abstract
Cervical cancer screening is a critical public health measure, especially vital for underserved communities where disparities in access and outcomes are pronounced. Despite the life-saving potential of regular screening, numerous barriers-including geographical isolation, cultural and linguistic challenges, and socioeconomic factors-severely hinder accessibility for these populations. Multicancer early detection (MCED) tests emerge as a potentially effective intervention, offering a less invasive, more accessible approach that could transform how screenings are conducted. This paper explores the existing challenges in traditional cervical cancer screening methods, the potential of MCED tests to address these barriers, and the implications of these technologies for global health equity. Through a comprehensive review, we highlight the need for culturally sensitive, tailored interventions and the importance of effectively overcoming logistical and financial difficulties to implement MCED tests. Despite the promise shown by MCED tests, the paper acknowledges significant implementation challenges, including cost, logistical obstacles, and the need for cultural acceptance and validation studies. This study emphasizes the necessity for equitable MCED test implementation strategies, highlighting the potential of these innovative technologies to advance global health equity in cervical cancer prevention.
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Affiliation(s)
| | - Hideshi Ishii
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takaaki Hirotsu
- Shonan Research and Development Center, Hirotsu Bio Science Inc., Tokyo, Japan
| | - Hideyuki Hatakeyama
- Shonan Research and Development Center, Hirotsu Bio Science Inc., Tokyo, Japan
| | - Masayo Morishita
- Shonan Research and Development Center, Hirotsu Bio Science Inc., Tokyo, Japan
| | - Eric di Luccio
- Shonan Research and Development Center, Hirotsu Bio Science Inc., Tokyo, Japan
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Hu G, Zhong J, Wang X, Wei G. Multi-strategy assisted chaotic coot-inspired optimization algorithm for medical feature selection: A cervical cancer behavior risk study. Comput Biol Med 2022; 151:106239. [PMID: 36335810 DOI: 10.1016/j.compbiomed.2022.106239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/18/2022] [Accepted: 10/22/2022] [Indexed: 12/27/2022]
Abstract
Real-world optimization problems require some advanced metaheuristic algorithms, which functionally sustain a variety of solutions and technically explore the tracking space to find the global optimal solution or optimizer. One such algorithm is the newly developed COOT algorithm that is used to solve complex optimization problems. However, like other swarm intelligence algorithms, the COOT algorithm also faces the issues of low diversity, slow iteration speed, and stagnation in local optimization. In order to ameliorate these deficiencies, an improved population-initialized COOT algorithm named COBHCOOT is developed by integrating chaos map, opposition-based learning strategy and hunting strategy, which are used to accelerate the global convergence speed and boost the exploration efficiency and solution quality of the algorithm. To validate the dominance of the proposed COBHCOOT, it is compared with the original COOT algorithm and the well-known natural heuristic optimization algorithm on the recognized CEC2017 and CEC2019 benchmark suites, respectively. For the 29 CEC2017 problems, COBHCOOT performed the best in 15 (51.72%, 30-Dim), 14 (48.28%, 50-Dim) and 11 (37.93%, 100-Dim) respectively, and for the 10 CEC2019 benchmark functions, COBHCOOT performed the best in 7 of them. Furthermore, the practicability and potential of COBHCOOT are also highlighted by solving two engineering optimization problems and four truss structure optimization problems. Eventually, to examine the validity and performance of COBHCOOT for medical feature selection, eight medical datasets are used as benchmarks to compare with other superior methods in terms of average accuracy and number of features. Particularly, COBHCOOT is applied to the feature selection of cervical cancer behavior risk dataset. The findings testified that COBHCOOT achieves better accuracy with a minimal number of features compared with the comparison methods.
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Affiliation(s)
- Gang Hu
- Department of Applied Mathematics, Xi'an University of Technology, Xi'an, 710054, PR China; School of Computer Science and Engineering,, Xi'an University of Technology, Xi'an, 710048, PR China.
| | - Jingyu Zhong
- Department of Applied Mathematics, Xi'an University of Technology, Xi'an, 710054, PR China
| | - Xupeng Wang
- School of Art and Design, Xi'an University of Technology, Xi'an, 710054, China
| | - Guo Wei
- University of North Carolina at Pembroke, Pembroke, NC, 28372, USA
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Hawkins AT, Fang SH. Anal Squamous Intraepithelial Lesions and Anal Cancer Management in Low Resource Settings. Clin Colon Rectal Surg 2022; 35:396-401. [PMID: 36111083 PMCID: PMC9470285 DOI: 10.1055/s-0042-1746188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A low resource setting (LRS) is defined as a health care system which does not meet the criteria defined by the World Health Organization (WHO) or other national/international organizations in the following areas: infrastructure, materials, and human resources. 1 Patients encounter barriers which limit their access to care and services that are considered standard of care. While LRS is most commonly associated with developing countries, it is easy to overlook communities in developed countries which lack the financial resources to afford basic health care. This article describes the societal implications and barriers to care for both squamous intraepithelial lesions (SILs) and anal cancer in LRS, the existing screening/surveillance approaches, available treatment approaches to anal cancer, and it also discusses potential evidence-based approaches to bridge the gap for these disparities in anal cancer care.
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Affiliation(s)
- Alexander T. Hawkins
- Department of Surgery, Section of Colon and Rectal Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Sandy H. Fang
- Department of Surgery, Oregon Health and Science University, Portland, Oregon
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Nakisige C, Adams SV, Namirembe C, Okoche L, Ferrenberg J, Towlerton A, Larsen A, Orem J, Casper C, Frenkel L, Uldrick TS. Multiple High-Risk HPV Types Contribute to Cervical Dysplasia in Ugandan Women Living With HIV on Antiretroviral Therapy. J Acquir Immune Defic Syndr 2022; 90:333-342. [PMID: 35195571 PMCID: PMC9203909 DOI: 10.1097/qai.0000000000002941] [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: 08/02/2021] [Accepted: 02/02/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cervical cancer mortality remains high in sub-Saharan Africa, especially among women living with HIV (WLWH). Characterization of prevalent high-risk human papillomavirus (hrHPV) types and immune function in WLWH with cervical abnormalities despite antiretroviral therapy (ART) can inform prevention strategies. SETTING Kampala, Uganda. METHODS From 2017 to 2020, we enrolled Ugandan women with cervical dysplasia detected with visual inspection with acetic acid (VIA). WLWH were required to be on ART >3 months with plasma HIV RNA <1000 copies/mL. Biopsies from VIA-positive lesions underwent histopathologic grading and cervical swab specimens were tested for hrHPV. Clinical correlations were evaluated with Poisson regression to estimate adjusted prevalence ratios (aPR). RESULTS One hundred eighty-eight WLWH and 116 HIV-seronegative women participated. Among WLWH, median ART duration was 6 years and median CD4 667 cells/µL. Cervical intraepithelial neoplasia (CIN) grade 2/3 was found in 29% of WLWH versus 9% of HIV-seronegative women. In women with CIN1 or without histopathology-confirmed dysplasia, hrHPV (aPR [95% confidence interval]: 2.17 [1.43 to 3.29]) and multiple hrHPV (aPR 3.73 [1.07 to 13.1]) were more common in WLWH, as were vaccine-targeted and vaccine-untargeted hrHPVtypes. Differences in hrHPV prevalence by HIV serostatus were not observed in women with CIN2/3 (interaction P < 0.01). Among WLWH, low CD4/8 ratio was associated with hrHPV while detectable plasma HIV RNA (20-1000 copies/mL) was associated with CIN2/3 or invasive cancer. CONCLUSION Despite ART, WLWH with cervical VIA abnormalities remain at elevated risk for multiple hrHPV and high-grade dysplasia. Cervical cancer prevention and research tailored for WLWH are warranted in the ART era.
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Affiliation(s)
| | - Scott V. Adams
- Vaccine and Infectious Disease Division and Global Oncology Program, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Lazarus Okoche
- Hutchinson Centre Research Institute - Uganda, Fred Hutch, Kampala, Uganda
| | | | - Andrea Towlerton
- Clinical Research Division and Global Oncology Program, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Anna Larsen
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | | | - Corey Casper
- Infectious Disease Research Institute, Seattle, WA, USA
- Departments of Medicine and Global Health, University of Washington, Seattle, WA, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Lisa Frenkel
- Departments of Pediatrics, Laboratory Medicine and Pathology, Global Health and Medicine, University of Washington; and Center for Infectious Disease Research, Seattle Children’s Research Institute; Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Thomas S. Uldrick
- Vaccine and Infectious Disease Division and Global Oncology Program, Fred Hutchinson Cancer Research Center, Seattle, WA, USA, and University of Washington, Seattle, WA, USA
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Decouttere C, De Boeck K, Vandaele N. Advancing sustainable development goals through immunization: a literature review. Global Health 2021; 17:95. [PMID: 34446050 PMCID: PMC8390056 DOI: 10.1186/s12992-021-00745-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 07/23/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Immunization directly impacts health (SDG3) and brings a contribution to 14 out of the 17 Sustainable Development Goals (SDGs), such as ending poverty, reducing hunger, and reducing inequalities. Therefore, immunization is recognized to play a central role in reaching the SDGs, especially in low- and middle-income countries (LMICs). Despite continuous interventions to strengthen immunization systems and to adequately respond to emergency immunization during epidemics, the immunization-related indicators for SDG3 lag behind in sub-Saharan Africa. Especially taking into account the current Covid19 pandemic, the current performance on the connected SDGs is both a cause and a result of this. METHODS We conduct a literature review through a keyword search strategy complemented with handpicking and snowballing from earlier reviews. After title and abstract screening, we conducted a qualitative analysis of key insights and categorized them according to showing the impact of immunization on SDGs, sustainability challenges, and model-based solutions to these challenges. RESULTS We reveal the leveraging mechanisms triggered by immunization and position them vis-à-vis the SDGs, within the framework of Public Health and Planetary Health. Several challenges for sustainable control of vaccine-preventable diseases are identified: access to immunization services, global vaccine availability to LMICs, context-dependent vaccine effectiveness, safe and affordable vaccines, local/regional vaccine production, public-private partnerships, and immunization capacity/capability building. Model-based approaches that support SDG-promoting interventions concerning immunization systems are analyzed in light of the strategic priorities of the Immunization Agenda 2030. CONCLUSIONS In general terms, it can be concluded that relevant future research requires (i) design for system resilience, (ii) transdisciplinary modeling, (iii) connecting interventions in immunization with SDG outcomes, (iv) designing interventions and their implementation simultaneously, (v) offering tailored solutions, and (vi) model coordination and integration of services and partnerships. The research and health community is called upon to join forces to activate existing knowledge, generate new insights and develop decision-supporting tools for Low-and Middle-Income Countries' health authorities and communities to leverage immunization in its transformational role toward successfully meeting the SDGs in 2030.
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Affiliation(s)
- Catherine Decouttere
- KU Leuven, Access-To-Medicines research Center, Naamsestraat 69, Leuven, Belgium
| | - Kim De Boeck
- KU Leuven, Access-To-Medicines research Center, Naamsestraat 69, Leuven, Belgium
| | - Nico Vandaele
- KU Leuven, Access-To-Medicines research Center, Naamsestraat 69, Leuven, Belgium
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Kau YC, Liu FC, Kuo CF, Huang HJ, Li AH, Hsieh MY, Yu HP. Trend and survival outcome in Taiwan cervical cancer patients: A population-based study. Medicine (Baltimore) 2019; 98:e14848. [PMID: 30882680 PMCID: PMC6426611 DOI: 10.1097/md.0000000000014848] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Cervical cancer is one of the most common cancers in Taiwan. The aim of this study was to estimate the incidence of cervical cancer in Taiwan, the relationship between cervical cancer and previous co-morbidities, and the long-term trend of cervical cancer mortality differences in the rest of the world.This study was based on the data of cervical cancer in the National Health Insurance Research Database from 1997 to 2013, and estimated the annual prevalence and incidence of cervical cancer. Joinpoint regression analysis was used to obtain the percentage of annual incidence of cervical cancer, morbidity and survival of patients with cervical cancer by statistical regression analysis.The average annual percentage change (APC) was -7.2, indicating a decrease in the incidence of cervical cancer during the study period. The 1-year, 2-year, and 5-year mortality rates of cervical cancer are relatively stable. The average APC of mortality was higher in high Charlson comorbidity index (CCI) group.This study found that both of prevalence and incidence of cervical cancer descend in Taiwan. The incidence of cervical cancer in Taiwan is increasing with age. The sample survival rate was stable in cervical cancer patients during the study period.
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Affiliation(s)
- Yi-Chuan Kau
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chang-Fu Kuo
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Division of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Office for Big Data Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Huei-Jean Huang
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Gynecologic Cancer Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Allen H. Li
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Yun Hsieh
- Office for Big Data Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Anesthesiology, Xiamen Chang Gung Hospital, Xiamen, China
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Kisaakye E, Namakula J, Kihembo C, Kisakye A, Nsubuga P, Babirye JN. Level and factors associated with uptake of human papillomavirus infection vaccine among female adolescents in Lira District, Uganda. Pan Afr Med J 2018; 31:184. [PMID: 31086634 PMCID: PMC6488240 DOI: 10.11604/pamj.2018.31.184.14801] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 11/12/2018] [Indexed: 11/11/2022] Open
Abstract
Introduction the principal burden of human papillomavirus (HPV) infections is cervical cancer. Cervical cancer ranks as the fourth most common malignancy in women affecting 500,000 women each year with an estimated 266,000 deaths. Uganda has one of the highest cervical cancer incidence rates globally with an age-standardised incidence rate per 100,000 of 47.5. This study assessed the level and the factors associated with uptake of HPV vaccine by female adolescents in Lira district, Uganda. Methods a mixed methods approach was employed using a survey among 460 female adolescents. We collected data using an interviewer-administered questionnaire. We interviewed five key informants and conducted ten in-depth interviews. Uptake was defined as completing three doses of the vaccine as per the recommended schedule. Prevalence risk ratios were used as measures of association and were computed using modified poison regression. Content analysis was used for qualitative data. Results the mean age of the respondents was 13.97 (SD=1.24). Uptake was at 17.61% (81/460). The factors associated with uptake of HPV vaccine were: attaining ordinary level of education (aPR 1.48, 95%CI 1.11-1.97), positive attitude towards the vaccine (aPR 3.46, 95%CI 1.70-7.02), receiving vaccine doses from different vaccination sites (aPR 1.59, 95% CI 1.10-2.28) and encouragement from a health worker (aPR 1.55, 95%CI 1.15-2.11) or Village Health Team (aPR 3.47, 95%CI 1.50-8.02) to go for the vaccine. Other factors associated with uptake of HPV vaccine included; the existence of community outreaches (aPR 1.47, 95%CI 1.02-2.12), availability of vaccines at vaccination sites (aPR 4.84, 95%CI 2.90-8.08) and receiving full information about the vaccine at the vaccination site (aPR 1.90, 95%CI 1.26-2.85). Conclusion HPV vaccine uptake was low in Lira district. Efforts to improve uptake of HPV vaccine should focus on ensuring a consistent supply of vaccines at the vaccination sites, health education aimed at creating a positive attitude towards the vaccine, sensitisation of the adolescents about the vaccine and conducting community outreaches.
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Affiliation(s)
- Esther Kisaakye
- School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Justine Namakula
- School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Christine Kihembo
- African Field Epidemiology Network, Lugogo House Plot 42, Lugogo Bypass, Kampala, Uganda
| | - Angela Kisakye
- School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda.,African Field Epidemiology Network, Lugogo House Plot 42, Lugogo Bypass, Kampala, Uganda
| | - Peter Nsubuga
- Global Public Health Solutions, CDC EIS Program, Atlanta, Georgia
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Odunyemi FT, Ndikom CM, Oluwatosin OA. Effect of Nursing Intervention on Mothers' Knowledge of Cervical Cancer and Acceptance of Human Papillomavirus Vaccination for their Adolescent Daughters in Abuja - Nigeria. Asia Pac J Oncol Nurs 2018; 5:223-230. [PMID: 29607384 PMCID: PMC5863433 DOI: 10.4103/apjon.apjon_75_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 11/20/2017] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE The aim of this study is to evaluate the effect of nursing intervention on mothers' knowledge of cervical cancer and acceptance of human papillomavirus (HPV) vaccination for their adolescent daughters in Abuja, Nigeria. METHODS This was a quasi-experimental study that utilized two groups pre and post-test design. The study was carried out among civil servant mothers in Bwari (experimental group [EG]) and Kwali (control group[CG]) Area Councils of Abuja, Nigeria. One hundred and forty-six women who met the inclusion criteria were purposively selected for this study. EG consists of 69 women while 77 are from CG. The intervention consisted of two days workshop on cervical cancer and HPV vaccination. Descriptive and inferential analyses of the data were performed using SPSS software 20 version. RESULTS The mean age of the respondents was 35 years ± 6.6 in the EG and 41 years ± 8.2 in the CG. The mean knowledge score of cervical cancer was low at baseline in both EG (9.58 ± 7.1) and CG (11.61 ± 6.5). However, there was a significant increase to 21.45 ± 6.2 after the intervention in EG (P < 0.0001). The baseline acceptance of HPV vaccination was high in EG after intervention from 74% to 99%. Exposure to nursing intervention and acceptance of HPV vaccination was statistically significant after intervention (P < 0.0001). CONCLUSIONS The nursing intervention has been found to increase mothers' knowledge of cervical cancer and acceptance of HPV vaccination. It is therefore recommended that nurses should use every available opportunity in mothers' clinic to educate on cervical cancer and HPV vaccination.
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Affiliation(s)
- Funmilola T. Odunyemi
- Department of Nursing, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Chizoma M. Ndikom
- Department of Nursing, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - O. Abimbola Oluwatosin
- Department of Nursing, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
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Wallace L, Kapirir L. How Are New Vaccines Prioritized in Low-Income Countries? A Case Study of Human Papilloma Virus Vaccine and Pneumococcal Conjugate Vaccine in Uganda. Int J Health Policy Manag 2017; 6:707-720. [PMID: 29172378 PMCID: PMC5726321 DOI: 10.15171/ijhpm.2017.37] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 03/14/2017] [Indexed: 11/09/2022] Open
Abstract
Background: To date, research on priority-setting for new vaccines has not adequately explored the influence of the global, national and sub-national levels of decision-making or contextual issues such as political pressure and stakeholder influence and power. Using Kapiriri and Martin’s conceptual framework, this paper evaluates priority setting for new vaccines in Uganda at national and sub-national levels, and considers how global priorities can influence country priorities. This study focuses on 2 specific vaccines, the human papilloma virus (HPV) vaccine and the pneumococcal conjugate vaccine (PCV).
Methods: This was a qualitative study that involved reviewing relevant Ugandan policy documents and media reports, as well as 54 key informant interviews at the global level and national and sub-national levels in Uganda. Kapiriri and Martin’s conceptual framework was used to evaluate the prioritization process.
Results: Priority setting for PCV and HPV was conducted by the Ministry of Health (MoH), which is considered to be a legitimate institution. While respondents described the priority setting process for PCV process as transparent, participatory, and guided by explicit relevant criteria and evidence, the prioritization of HPV was thought to have been less transparent and less participatory. Respondents reported that neither process was based on an explicit priority setting framework nor did it involve adequate representation from the districts (program implementers) or publicity. The priority setting process for both PCV and HPV was negatively affected by the larger political and economic context, which contributed to weak institutional capacity as well as power imbalances between development assistance partners and the MoH.
Conclusion: Priority setting in Uganda would be improved by strengthening institutional capacity and leadership and ensuring a transparent and participatory processes in which key stakeholders such as program implementers (the districts) and beneficiaries (the public) are involved. Kapiriri and Martin’s framework has the potential to guide priority setting evaluation efforts, however, evaluation should be built into the priority setting process a priori such that information on priority setting is gathered throughout the implementation cycle.
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Affiliation(s)
- Lauren Wallace
- Department of Anthropology, McMaster University, Hamilton, ON, Canada
| | - Lydia Kapirir
- Department of Health, Aging and Society, McMaster University, Hamilton, ON, Canada
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Lessons learnt from human papillomavirus (HPV) vaccination in 45 low- and middle-income countries. PLoS One 2017; 12:e0177773. [PMID: 28575074 PMCID: PMC5456063 DOI: 10.1371/journal.pone.0177773] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 05/02/2017] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To synthesise lessons learnt and determinants of success from human papillomavirus (HPV) vaccine demonstration projects and national programmes in low- and middle-income countries (LAMICs). METHODS Interviews were conducted with 56 key informants. A systematic literature review identified 2936 abstracts from five databases; after screening 61 full texts were included. Unpublished literature, including evaluation reports, was solicited from country representatives; 188 documents were received. A data extraction tool and interview topic guide outlining key areas of inquiry were informed by World Health Organization guidelines for new vaccine introduction. Results were synthesised thematically. RESULTS Data were analysed from 12 national programmes and 66 demonstration projects in 46 countries. Among demonstration projects, 30 were supported by the GARDASIL® Access Program, 20 by Gavi, four by PATH and 12 by other means. School-based vaccine delivery supplemented with health facility-based delivery for out-of-school girls attained high coverage. There were limited data on facility-only strategies and little evaluation of strategies to reach out-of-school girls. Early engagement of teachers as partners in social mobilisation, consent, vaccination day coordination, follow-up of non-completers and adverse events was considered invaluable. Micro-planning using school/ facility registers most effectively enumerated target populations; other estimates proved inaccurate, leading to vaccine under- or over-estimation. Refresher training on adverse events and safe injection procedures was usually necessary. CONCLUSION Considerable experience in HPV vaccine delivery in LAMICs is available. Lessons are generally consistent across countries and dissemination of these could improve HPV vaccine introduction.
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Finocchario-Kessler S, Wexler C, Maloba M, Mabachi N, Ndikum-Moffor F, Bukusi E. Cervical cancer prevention and treatment research in Africa: a systematic review from a public health perspective. BMC Womens Health 2016; 16:29. [PMID: 27259656 PMCID: PMC4893293 DOI: 10.1186/s12905-016-0306-6] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 05/21/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Women living in Africa experience the highest burden of cervical cancer. Research and investment to improve vaccination, screening, and treatment efforts are critically needed. We systematically reviewed and characterized recent research within a broader public health framework to organize and assess the range of cervical cancer research in Africa. METHODS We searched online databases and the Internet for published articles and cervical cancer reports in African countries. Inclusion criteria included publication between 2004 and 2014, cervical cancer-related content pertinent to one of the four public health categories (primary, secondary, tertiary prevention or quality of life), and conducted in or specifically relevant to countries or regions within the African continent. The study design, geographic region/country, focus of research, and key findings were documented for each eligible article and summarized to illustrate the weight and research coverage in each area. Publications with more than one focus (e.g. secondary and tertiary prevention) were categorized by the primary emphasis of the paper. Research specific to HIV-infected women or focused on feasibility issues was delineated within each of the four public health categories. RESULTS A total of 380 research articles/reports were included. The majority (54.6 %) of cervical cancer research in Africa focused on secondary prevention (i.e., screening). The number of publication focusing on primary prevention (23.4 %), particularly HPV vaccination, increased significantly in the past decade. Research regarding the treatment of precancerous lesions and invasive cervical cancer is emerging (17.6 %), but infrastructure and feasibility challenges in many countries have impeded efforts to provide and evaluate treatment. Studies assessing aspects of quality of life among women living with cervical cancer are severely limited (4.1 %). Across all categories, 11.3 % of publications focused on cervical cancer among HIV-infected women, while 17.1 % focused on aspects of feasibility for cervical cancer control efforts. CONCLUSIONS Cervical cancer research in African countries has increased steadily over the past decade, but more is needed. Tertiary prevention (i.e. treatment of disease with effective medicine) and quality of life of cervical cancer survivors are two severely under-researched areas. Similarly, there are several countries in Africa with little to no research ever conducted on cervical cancer.
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Affiliation(s)
| | - Catherine Wexler
- Department of Family Medicine, University of Kansas Medical Center, Kansas City, USA
| | - May Maloba
- Family AIDS Care and Education Services, Kenya Medical Research Institute, Kisumu, Kenya
| | - Natabhona Mabachi
- Department of Family Medicine, University of Kansas Medical Center, Kansas City, USA
| | - Florence Ndikum-Moffor
- Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City, USA
| | - Elizabeth Bukusi
- Family AIDS Care and Education Services, Kenya Medical Research Institute, Kisumu, Kenya
- Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
- Department of Obstetrics and Gynecology, University of Nairobi, Nairobi, Kenya
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Chidyaonga-Maseko F, Chirwa ML, Muula AS. Underutilization of cervical cancer prevention services in low and middle income countries: a review of contributing factors. Pan Afr Med J 2015; 21:231. [PMID: 26523173 PMCID: PMC4607967 DOI: 10.11604/pamj.2015.21.231.6350] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 07/04/2015] [Indexed: 12/18/2022] Open
Abstract
This review aims at identifying barriers to utilization of cervical cancer prevention services in low- and middle-income countries. An electronic search was conducted using the following key words, HPV vaccination, screening, barriers, utilization and low and middle income/developed countries. Using the Garrard (1999) Matrix method approach, a modified matrix was designed and used as a data collection tool and data related to each category listed on the tool were entered into a matrix containing columns reflecting the categories. Constant comparative analysis was used to identify thematic categories. 31 articles published between 2001 and 2014 were yielded from the search. Analysis of the contents of the articles showed that the underutilization of cervical cancer screening services in low and middle-income countries is the result of barriers in accessing and utilizing of the prevention services. Though not mutually exclusive, the barriers were categorized in three categories; individual, community and health system related. Individual barriers include lack of awareness and knowledge about risk factors and prevention of cervical cancer. Age, marital status, diffidence, social economic status, cultural and religious belief of the women also determine the women's' willingness to utilize the services. In some communities there is stigma attached to discussing reproductive health issues and this limits the young women's awareness of cervical cancer and its prevention. Understanding individual, community and health system barriers that hinder women's utilization of cervical cancer prevention services is very crucial in designing effective cervical cancer control programs in low- and middle-income countries.
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Affiliation(s)
- Fresier Chidyaonga-Maseko
- School of Public Health and Family Medicine Health, University of Malawi, Mahatma Gandhi Road, Private Bag 360, Chichiri, Blantyre 3, Malawi
| | - Maureen Leah Chirwa
- Prime Health Consulting and Services, Prime Health Consulting and Services A47/5/240, Malingunde Road. P.O. Box 1926, Lilongwe, Malawi
| | - Adamson Sinjani Muula
- School of Public Health and Family Medicine Health, University of Malawi, Mahatma Gandhi Road, Private Bag 360, Chichiri, Blantyre 3, Malawi
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Safety and Efficacy Data on Vaccines and Immunization to Human Papillomavirus. J Clin Med 2015; 4:614-33. [PMID: 26239350 PMCID: PMC4470159 DOI: 10.3390/jcm4040614] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 02/09/2015] [Accepted: 02/17/2015] [Indexed: 12/21/2022] Open
Abstract
Since the discovery of the causal association between human papillomavirus (HPV) and cervical cancer, efforts to develop an effective prophylactic vaccine to prevent high-risk HPV infections have been at the forefront of modern medical research. HPV causes 530,000 cervical cancer cases worldwide, which is the second most common cause of cancer deaths in women; a worldwide collaboration among epidemiologists, molecular biologists, vaccinologists, virologists, and clinicians helped lead to the development of two highly effective prophylactive HPV vaccines. The first, Gardasil, is a quadrivalent vaccine made up of recombinant HPV L1 capsid proteins from the two high-risk HPV types (16/18) responsible for 70% of cervical cancer cases as well as two low-risk HPV types (6/11) which are the causative agent for genital warts. The second, Cervarix, is a bivalent vaccine that was FDA approved three years after Gardasil and is also composed of L1 capsid proteins from HPV types 16/18. This review article focuses on the safety and efficacy data of both FDA-approved vaccines, as well as highlighting a few advances in future HPV vaccines that show promise in becoming additional treatment options for this worldwide disease.
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Perlman S, Wamai RG, Bain PA, Welty T, Welty E, Ogembo JG. Knowledge and awareness of HPV vaccine and acceptability to vaccinate in sub-Saharan Africa: a systematic review. PLoS One 2014; 9:e90912. [PMID: 24618636 PMCID: PMC3949716 DOI: 10.1371/journal.pone.0090912] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 02/04/2014] [Indexed: 01/19/2023] Open
Abstract
Objectives We assessed the knowledge and awareness of cervical cancer, HPV and HPV vaccine, and willingness and acceptability to vaccinate in sub-Saharan African (SSA) countries. We further identified countries that fulfill the two GAVI Alliance eligibility criteria to support nationwide HPV vaccination. Methods We conducted a systematic review of peer-reviewed studies on the knowledge and awareness of cervical cancer, HPV and HPV vaccine, and willingness and acceptability to vaccinate. Trends in Diphtheria-tetanus-pertussis (DTP3) vaccine coverage in SSA countries from 1990–2011 were extracted from the World Health Organization database. Findings The review revealed high levels of willingness and acceptability of HPV vaccine but low levels of knowledge and awareness of cervical cancer, HPV or HPV vaccine. We identified only six countries to have met the two GAVI Alliance requirements for supporting introduction of HPV vaccine: 1) the ability to deliver multi-dose vaccines for no less than 50% of the target vaccination cohort in an average size district, and 2) achieving over 70% coverage of DTP3 vaccine nationally. From 2008 through 2011 all SSA countries, with the exception of Mauritania and Nigeria, have reached or maintained DTP3 coverage at 70% or above. Conclusion There is an urgent need for more education to inform the public about HPV, HPV vaccine, and cervical cancer, particularly to key demographics, (adolescents, parents and healthcare professionals), to leverage high levels of willingness and acceptability of HPV vaccine towards successful implementation of HPV vaccination programs. There is unpreparedness in most SSA countries to roll out national HPV vaccination as per the GAVI Alliance eligibility criteria for supporting introduction of the vaccine. In countries that have met 70% DTP3 coverage, pilot programs need to be rolled out to identify the best practice and strategies for delivering HPV vaccines to adolescents and also to qualify for GAVI Alliance support.
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Affiliation(s)
- Stacey Perlman
- Pathfinder International, Watertown, Massachusetts, United States of America
| | - Richard G. Wamai
- Northeastern University, Boston, Massachusetts, United States of America
| | - Paul A. Bain
- Countway Library of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Thomas Welty
- Cameroon Baptist Convention Health Services, Bamenda, Cameroon
| | - Edith Welty
- Cameroon Baptist Convention Health Services, Bamenda, Cameroon
| | - Javier Gordon Ogembo
- University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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Mind the gaps: a qualitative study of perceptions of healthcare professionals on challenges and proposed remedies for cervical cancer help-seeking in post conflict northern Uganda. BMC FAMILY PRACTICE 2013; 14:193. [PMID: 24341601 PMCID: PMC3915559 DOI: 10.1186/1471-2296-14-193] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 12/11/2013] [Indexed: 11/18/2022]
Abstract
Background There are limited data on perceptions of health professionals on challenges faced by cervical cancer patients seeking healthcare in the developing countries. We explored the views of operational level health professionals on perceived barriers to cervical screening and early help–seeking for symptomatic cervical cancer and the proposed remedies to the challenges. Methods Fifteen key informant interviews were held with health professionals including medical directors, gynecologists, medical officers, nurses and midwives in the gynecology and obstetrics departments of two hospitals in northern Uganda during August 2012 to April 2013. We used content analysis techniques to analyze the data. Results Health professionals’ perceived barriers to cervical cancer care included: (i) patients and community related barriers e.g. lack of awareness on cervical cancer and available services, discomfort with exposure of women’s genitals and perceived pain during pelvic examinations, and men’s lack of emotional support to women (ii) individual healthcare professional’s challenges e.g. inadequate knowledge and skills about cervical cancer management; (iii) health facility related barriers e.g. long distances and lack of transport to cervical cancer screening and care centers, few gynecologists and lack of pathologists, delayed histology results, lack of established palliative care services and inadequate pain control; and (iv) health policy challenges e.g. lack of specialized cancer treatment services, and lack of vaccination for human papilloma virus. Other challenges included increased number of cervical cancer patients and late stage of cervical cancer at presentations. Conclusions Operational level healthcare professionals in northern Uganda reported several practical challenges facing cervical cancer care that influence their decisions, management goals and practices. The challenges and proposed remedies can inform targeted interventions for early detection, management, and control of cervical cancer in Uganda.
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