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Ma S, Lavelle TA, Ollendorf DA, Lin PJ. Herd Immunity Effects in Cost-Effectiveness Analyses among Low- and Middle-Income Countries. APPLIED HEALTH ECONOMICS AND HEALTH POLICY 2022; 20:395-404. [PMID: 35001292 PMCID: PMC8743090 DOI: 10.1007/s40258-021-00711-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2021] [Indexed: 05/06/2023]
Abstract
BACKGROUND Herd immunity (HI) is a key benefit of vaccination programs, but the effects are not routinely included in cost-effectiveness analyses (CEAs). OBJECTIVE This study investigated how the inclusion of HI in CEAs may influence the reported value of immunizations in low- and middle-income countries (LMICs) and illustrated the implications for COVID-19 immunization. METHODS We reviewed immunization CEAs published from 2000 to 2018 focusing on LMICs using data from the Tufts Medical Center CEA Registries. We investigated the proportion of studies that included HI, the methods used, and the incremental cost-effectiveness ratios (ICERs) reported. When possible, we evaluated how ICERs would change with and without HI. RESULTS Among the 243 immunization CEAs meeting inclusion criteria, 44 studies (18%) included HI. Of those studies, 11 (25%) used dynamic transmission models, whereas the remainder used static models. Sixteen studies allowed for ICER calculations with and without HI (n = 48 ratios). The inclusion of HI always resulted in more favorable ratios. In 20 cases (42%), adding HI decreased the ICERs enough to cross at least one or more common cost-effectiveness benchmarks for LMICs. Among pneumococcal vaccination studies, including HI in the analyses decreased seven of 24 ICERs enough to cross at least one cost-effectiveness benchmark. CONCLUSION The full value of immunization may be underestimated without considering a scenario in which HI is achieved. Given the evidence in pneumococcal CEAs, COVID-19 vaccine value assessments should aim to show ICERs with and without HI to inform decision-making in LMICs.
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Affiliation(s)
- Siyu Ma
- The Center for the Evaluation of Value and Risk in Health (CEVR), The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington Street, Boston, MA, 02111, USA.
| | - Tara A Lavelle
- The Center for the Evaluation of Value and Risk in Health (CEVR), The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington Street, Boston, MA, 02111, USA
- Department of Medicine, Tufts University School of Medicine, Boston, MA, USA
| | - Daniel A Ollendorf
- The Center for the Evaluation of Value and Risk in Health (CEVR), The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington Street, Boston, MA, 02111, USA
- Department of Medicine, Tufts University School of Medicine, Boston, MA, USA
| | - Pei-Jung Lin
- The Center for the Evaluation of Value and Risk in Health (CEVR), The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington Street, Boston, MA, 02111, USA
- Department of Medicine, Tufts University School of Medicine, Boston, MA, USA
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Nagi MA, Luangsinsiri C, Thavorncharoensap M. A systematic review of economic evaluations of vaccines in Middle East and North Africa countries: is existing evidence good enough to support policy decision-making? Expert Rev Pharmacoecon Outcomes Res 2021; 21:1159-1178. [PMID: 34252335 DOI: 10.1080/14737167.2021.1954508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION A vaccine introduction process should be systematic and transparent and take into account many factors, including cost-effectiveness evidence. This study aimed to assess quantity, characteristic, and quality of economic evaluation (EE) studies on vaccines performed in Middle East and North Africa (MENA) countries. AREAS COVERED PubMed and Scopus electronic databases were searched since inception to December 2019 to identify published EE studies of vaccines, which were conducted in the 26 MENA countries. Methodological quality of the included studies was evaluated using the Consolidated Health Economic Evaluation Reporting Standards (CHEERS) checklist. EXPERT OPINION Of the 616 studies identified, 46 were included in the review. Most studies (65%) were conducted in Iran, Israel, and Turkey. The most commonly evaluated vaccines were rotavirus vaccine (n = 15; 33%), human Papillomavirus vaccine (n = 8; 17%), and pneumococcal vaccine (n = 7; 15%). We classified 5 (11%), 27 (59%), 12 (26%), and 2 (4%) studies as excellent, good, moderate, and poor quality, respectively. There were limited cost-effectiveness evidences in the region. It is imperative to have local guidelines on good practice and reporting, availability of local data, and funding sources to improve quantity and quality of EE studies of vaccines in the region, thereby, facilitating transparent and consistent decision-making processes.
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Affiliation(s)
- Mouaddh Abdulmalik Nagi
- Doctor of Philosophy Program in Social, Economic, and Administrative Pharmacy, Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.,Faculty of Medical Sciences, Aljanad University for Science and Technology, Taiz, Yemen
| | - Chaisiri Luangsinsiri
- Doctor of Philosophy Program in Social, Economic, and Administrative Pharmacy, Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.,Department of Clinical Pharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhon Nayok, Thailand
| | - Montarat Thavorncharoensap
- Social and Administrative Pharmacy Excellence Research (SAPER) Unit, Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Rajathevi, Bangkok, Thailand
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Huang Y, Mian Q, Conradi N, Opoka RO, Conroy AL, Namasopo S, Hawkes MT. Estimated Cost-effectiveness of Solar-Powered Oxygen Delivery for Pneumonia in Young Children in Low-Resource Settings. JAMA Netw Open 2021; 4:e2114686. [PMID: 34165579 PMCID: PMC8226423 DOI: 10.1001/jamanetworkopen.2021.14686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
IMPORTANCE Pneumonia is the leading cause of childhood mortality worldwide. Severe pneumonia associated with hypoxemia requires oxygen therapy; however, access remains unreliable in low- and middle-income countries. Solar-powered oxygen delivery (solar-powered O2) has been shown to be a safe and effective technology for delivering medical oxygen. Examining the cost-effectiveness of this innovation is critical for guiding implementation in low-resource settings. OBJECTIVE To determine the cost-effectiveness of solar-powered O2 for treating children in low-resource settings with severe pneumonia who require oxygen therapy. DESIGN, SETTING, AND PARTICIPANTS An economic evaluation study of solar-powered O2 was conducted from January 12, 2020, to February 27, 2021, in compliance with the World Health Organization Choosing Interventions That Are Cost-Effective (WHO-CHOICE) guidelines. Using existing literature, plausible ranges for component costs of solar-powered O2 were determined in order to calculate the expected total cost of implementation. The costs of implementing solar-powered O2 at a single health facility in low- and middle-income countries was analyzed for pediatric patients younger than 5 years who required supplemental oxygen. EXPOSURES Treatment with solar-powered O2. MAIN OUTCOMES AND MEASURES The incremental cost-effectiveness ratio (ICER) of solar-powered O2 was calculated as the additional cost per disability-adjusted life-year (DALY) saved. Sensitivity of the ICER to uncertainties of input parameters was assessed through univariate and probabilistic sensitivity analyses. RESULTS The ICER of solar-powered O2 was estimated to be $20 (US dollars) per DALY saved (95% CI, $2.83-$206) relative to the null case (no oxygen). Costs of solar-powered O2 were alternatively quantified as $26 per patient treated and $542 per life saved. Univariate sensitivity analysis found that the ICER was most sensitive to the volume of pediatric pneumonia admissions and the case fatality rate. The ICER was insensitive to component costs of solar-powered O2 systems. In secondary analyses, solar-powered O2 was cost-effective relative to grid-powered concentrators (ICER $140 per DALY saved) and cost-saving relative to fuel generator-powered concentrators (cost saving of $7120). CONCLUSIONS AND RELEVANCE The results of this economic evaluation suggest that solar-powered O2 is a cost-effective solution for treating hypoxemia in young children in low- and middle-income countries, relative to no oxygen. Future implementation should prioritize sites with high rates of pediatric pneumonia admissions and mortality. This study provides economic support for expansion of solar-powered O2 and further assessment of its efficacy and mortality benefit.
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Affiliation(s)
| | - Qaasim Mian
- University of Alberta, Edmonton, Canada
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - Nicholas Conradi
- University of Alberta, Edmonton, Canada
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - Robert O. Opoka
- Department of Paediatrics and Child Health, Mulago Hospital and Makerere University, Kampala, Uganda
| | - Andrea L. Conroy
- Ryan White Center for Pediatric Infectious Diseases and Global Health, Indiana University School of Medicine, Indianapolis
| | - Sophie Namasopo
- Department of Paediatrics, Kabale District Hospital, Kabale, Uganda
| | - Michael T. Hawkes
- University of Alberta, Edmonton, Canada
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Canada
- University of Alberta School of Public Health, Edmonton, Canada
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Makhani LA, Moran V, Sadique Z, Singh NS, Revill P, Roberts B. Examining the use of economic evaluations in health-related humanitarian programmes in low- and middle-income countries: a systematic review. Health Policy Plan 2020; 35:210-218. [PMID: 31697373 DOI: 10.1093/heapol/czz144] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2019] [Indexed: 01/08/2023] Open
Abstract
The costly nature of health sector responses to humanitarian crises and resource constraints means that there is a need to identify methods for priority setting and long-term planning. One method is economic evaluation. The aim of this systematic review is to examine the use of economic evaluations in health-related humanitarian programmes in low- and middle-income countries. This review used peer-reviewed literature published between January 1980 and June 2018 extracted from four main electronic bibliographic databases. The eligibility criteria were full economic evaluations (which compare the costs and outcomes of at least two interventions and provide information on efficiency) of health-related services in humanitarian crises in low- and middle-countries. The quality of eligible studies is appraised using the modified 36-question Drummond checklist. From a total of 8127 total studies, 11 full economic evaluations were identified. All economic evaluations were cost-effectiveness analyses. Three of the 11 studies used a provider perspective, 2 studies used a healthcare system perspective, 3 studies used a societal perspective and 3 studies did not specify the perspective used. The lower quality studies failed to provide 7information on the unit of costs and did not justify the time horizon of costs and discount rates, or conduct a sensitivity analysis. There was limited geographic range of the studies, with 9 of the 11 studies conducted in Africa. Recommendations include greater use of economic evaluation methods and data to enhance the microeconomic understanding of health interventions in humanitarian settings to support greater efficiency and transparency and to strengthen capacity by recruiting economists and providing training in economic methods to humanitarian agencies.
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Affiliation(s)
- Lizna A Makhani
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, UK
| | - Valerie Moran
- Luxembourg Institute of Health, 1 A-B Rue Thomas Edison, 1445 Strassen, Luxembourg.,Luxembourg Institute of Socio-Economic Research, 11 Porte des Sciences, 4366 Esch-sur-Alzette, Luxembourg
| | - Zia Sadique
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, UK
| | - Neha S Singh
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, UK
| | - Paul Revill
- Centre for Health Economics, University of York, Alcuin 'A' Block, University of York, Heslington, York YO10 5DD, UK
| | - Bayard Roberts
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, UK
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Akseer N, Wright J, Tasic H, Everett K, Scudder E, Amsalu R, Boerma T, Bendavid E, Kamali M, Barros AJD, da Silva ICM, Bhutta ZA. Women, children and adolescents in conflict countries: an assessment of inequalities in intervention coverage and survival. BMJ Glob Health 2020; 5:e002214. [PMID: 32133179 PMCID: PMC7042600 DOI: 10.1136/bmjgh-2019-002214] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 01/22/2023] Open
Abstract
Introduction Conflict adversely impacts health and health systems, yet its effect on health inequalities, particularly for women and children, has not been systematically studied. We examined wealth, education and urban/rural residence inequalities for child mortality and essential reproductive, maternal, newborn and child health interventions between conflict and non-conflict low-income and middle-income countries (LMICs). Methods We carried out a time-series multicountry ecological study using data for 137 LMICs between 1990 and 2017, as defined by the 2019 World Bank classification. The data set covers approximately 3.8 million surveyed mothers (15-49 years) and 1.1 million children under 5 years including newborns (<1 month), young children (1-59 months) and school-aged children and adolescents (5-14 years). Outcomes include annual maternal and child mortality rates and coverage (%) of family planning services, 1+antenatal care visit, skilled attendant at birth (SBA), exclusive breast feeding (0-5 months), early initiation of breast feeding (within 1 hour), neonatal protection against tetanus, newborn postnatal care within 2 days, 3 doses of diphtheria, pertussis and tetanus vaccine, measles vaccination, and careseeking for pneumonia and diarrhoea. Results Conflict countries had consistently higher maternal and child mortality rates than non-conflict countries since 1990 and these gaps persist despite rates continually declining for both groups. Access to essential reproductive and maternal health services for poorer, less educated and rural-based families was several folds worse in conflict versus non-conflict countries. Conclusions Inequalities in coverage of reproductive/maternal health and child vaccine interventions are significantly worse in conflict-affected countries. Efforts to protect maternal and child health interventions in conflict settings should target the most disadvantaged families including the poorest, least educated and those living in rural areas.
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Affiliation(s)
- Nadia Akseer
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
| | - James Wright
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Hana Tasic
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Karl Everett
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Elaine Scudder
- Save the Children USA, Washington, District of Columbia, USA
| | - Ribka Amsalu
- Save the Children USA, Washington, District of Columbia, USA
| | - Ties Boerma
- Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Eran Bendavid
- Centers for Health Policy, Primary Care and Outcomes Research, Stanford University, Stanford, California, USA
| | - Mahdis Kamali
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Aluisio J D Barros
- International Centre for Equity in Health, Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil
| | | | - Zulfiqar Ahmed Bhutta
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario, Canada
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van Zandvoort K, Checchi F, Diggle E, Eggo RM, Gadroen K, Mulholland K, McGowan CR, le Polain de Waroux O, Rao VB, Satzke C, Flasche S. Pneumococcal conjugate vaccine use during humanitarian crises. Vaccine 2019; 37:6787-6792. [PMID: 31562004 DOI: 10.1016/j.vaccine.2019.09.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/16/2019] [Accepted: 09/09/2019] [Indexed: 11/16/2022]
Abstract
Streptococcus pneumoniae is a common human commensal that causes a sizeable part of the overall childhood mortality in low income settings. Populations affected by humanitarian crises are at especially high risk, because a multitude of risk factors that are enhanced during crises increase pneumococcal transmission and disease severity. Pneumococcal conjugate vaccines (PCVs) provide effective protection and have been introduced into the majority of routine childhood immunisation programmes globally, though several barriers have hitherto limited their uptake during humanitarian crises. When PCV coverage cannot be sustained during crises or when PCV has not been part of routine programmes, mass vaccination campaigns offer a quick acting and programmatically feasible bridging solution until services can be restored. However, we currently face a paucity of evidence on which to base the structure of such campaigns. We believe that, now that PCV can be procured at a substantially reduced price through the Humanitarian Mechanism, this lack of information is a remaining hurdle to PCV use in humanitarian crises. Considering the difficulties in conducting research in crises, we propose an evidence generation pathway consisting of primary data collection in combination with mathematical modelling followed by quasi-experimental evaluation of a PCV intervention, which can inform on optimal vaccination strategies that consider age targeting, dosing regimens and impact duration.
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Affiliation(s)
- Kevin van Zandvoort
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK; Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK.
| | - Francesco Checchi
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | | | - Rosalind M Eggo
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK; Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | - Kartini Gadroen
- Médecins Sans Frontières, Amsterdam, the Netherlands; Department of Medical Informatics, Erasmus MC, Rotterdam, the Netherlands
| | - Kim Mulholland
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK; Murdoch Children's Research Institute, University of Melbourne, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Catherine R McGowan
- Save the Children UK, London, UK; Department of Public Health, Environments, and Society, London School of Hygiene & Tropical Medicine. London, UK
| | - Olivier le Polain de Waroux
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK; Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK; UK Public Health Rapid Support Team, London, UK; Public Health England, London, UK
| | - V Bhargavi Rao
- Manson Unit, Médecins Sans Frontières (MSF UK), London, UK
| | - Catherine Satzke
- Murdoch Children's Research Institute, University of Melbourne, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Stefan Flasche
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK; Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK
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Chongmelaxme B, Hammanee M, Phooaphirak W, Kotirum S, Hutubessy R, Chaiyakunapruk N. Economic evaluations of Haemophilus influenzae type b (Hib) vaccine: a systematic review. J Med Econ 2017; 20:1094-1106. [PMID: 28737468 DOI: 10.1080/13696998.2017.1359181] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AIMS The World Health Organization (WHO) recommends the use of Haemophilus influenzae type b (Hib) conjugate vaccines, but China and Thailand have not used Hib vaccination in their national immunization programs. This systematic review aimed to update published economic evaluations of Hib vaccinations and to determine factors that potentially affected their cost-effectiveness. METHODS Searches were performed from the inception until December 2015 using 13 databases: CAB direct; CEA registry; EconLit; EMBASE; E-library; NHSEED; PAHO; POPLINE; PubMed; Redalyc project; RePEc; SciELO; and WHOLIS. Reference lists of relevant studies and grey literature were also searched. Full economic evaluations of Hib vaccination with results of costs and outcomes were included. The WHO checklist was used to evaluate the quality of the included studies. Data from eligible studies were extracted using a standardized data collection form. RESULTS Out of 830 articles, 27 were included. Almost half of the studies (12/27) were conducted in high-income countries. Twelve studies (12/27) investigated the Hib vaccine as an addition to the existing vaccination program. Most studies (17/27) examined a 3-dose schedule of Hib vaccine. Nineteen studies (19/27) reported the model used, where all were decision tree models. Most of the studies (23/27) demonstrated an economic value of Hib vaccination programs, key influential parameters being incidence rates of Hib disease and vaccine price. CONCLUSIONS Hib vaccination programs are mostly found to be cost-effective across geographic regions and country income levels, and Hib vaccination is recommended for inclusion into all national immunization programs. The findings are expected to support policy-makers for making decisions on allocating limited resources of the Hib vaccination program effectively.
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Affiliation(s)
- Bunchai Chongmelaxme
- a Center of Pharmaceutical Outcomes Research (CPOR) , Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences , Naresuan University , Phitsanulok , Thailand
| | - Maythika Hammanee
- b Faculty of Pharmaceutical Sciences , Prince of Songkla University , Hat-Yai, Songkla , Thailand
| | - Wariya Phooaphirak
- b Faculty of Pharmaceutical Sciences , Prince of Songkla University , Hat-Yai, Songkla , Thailand
| | - Surachai Kotirum
- c School of Pharmacy , Monash University Malaysia , Selangor , Malaysia
- d Social and Administrative Pharmacy Department, Faculty of Pharmacy , Rangsit University , Muang, Pathumthani , Thailand
| | - Raymond Hutubessy
- e World Health Organization , Initiative for Vaccine Research , Geneva , Switzerland
| | - Nathorn Chaiyakunapruk
- a Center of Pharmaceutical Outcomes Research (CPOR) , Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences , Naresuan University , Phitsanulok , Thailand
- c School of Pharmacy , Monash University Malaysia , Selangor , Malaysia
- f School of Pharmacy , University of Wisconsin , Madison , WI , USA
- g Asian Centre for Evidence Synthesis in Population , Implementation and Clinical Outcomes (PICO), Health and Well-being Cluster, Global Asia in the 21st Century (GA21) Platform , Monash University Malaysia , Bandar Sunway, Selangor , Malaysia
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Gargano LM, Hajjeh R, Cookson ST. Pneumonia prevention: Cost-effectiveness analyses of two vaccines among refugee children aged under two years, Haemophilus influenzae type b-containing and pneumococcal conjugate vaccines, during a humanitarian emergency, Yida camp, South Sudan. Vaccine 2016; 35:435-442. [PMID: 27989625 DOI: 10.1016/j.vaccine.2016.11.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 01/20/2023]
Abstract
By September 2013, war between Sudan and South Sudan resulted in >70,000 Sudanese refugees and high pneumonia incidence among the 20,000 refugees in Yida camp, South Sudan. Using Médecins Sans Frontières (MSF)-provided data and modifying our decision-tree models, we estimated if administering Haemophilus influenzae type b (Hib)-containing (pentavalent vaccine, also with diphtheria pertussis and tetanus [DPT] and hepatitis B) and pneumococcal conjugate (PCV) vaccines were cost-effective against hospitalized pneumonia. Among children <2years old, compared with no vaccination, one- and two-doses of combined Hib-containing and PCV would avert an estimated 118 and 125 pneumonia cases, and 8.5 and 9.1 deaths, respectively. The cost per Disability-Adjusted-Life-Year averted for administering combined one- and two-doses was US$125 and US$209, respectively. MSF demonstrated that it was possible to administer these vaccines during an emergency and our analysis found it was highly cost-effective, even with just one-dose of either vaccine. Despite unknown etiology, there is strong field and now economic rationale for administering Hib and PCV during at least one humanitarian emergency.
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Affiliation(s)
- Lisa M Gargano
- Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Rana Hajjeh
- Division of Bacterial Diseases, National Center of Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Susan T Cookson
- Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA, United States.
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Saokaew S, Rayanakorn A, Wu DBC, Chaiyakunapruk N. Cost Effectiveness of Pneumococcal Vaccination in Children in Low- and Middle-Income Countries: A Systematic Review. PHARMACOECONOMICS 2016; 34:1211-1225. [PMID: 27510721 DOI: 10.1007/s40273-016-0439-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Although pneumococcal conjugate vaccines (PCVs) have been available for prevention of invasive pneumococcal disease (IPD) caused by Streptococcus pneumoniae (S. pneumoniae) for over a decade, their adoption into national immunization programmes in low- and middle-income countries (LMICs) is still limited. Economic evaluations (EEs) play a crucial role in support of evidence-informed decisions. OBJECTIVE This systematic review aims to provide a critical summary of EEs of PCVs and identify key drivers of EE findings in LMICs. METHODS We searched Scopus, ISI Web of Science, PubMed, Embase and Cochrane Central from their inception to 30 September 2015 and limited the search to LMICs. The search was undertaken using the search strings 'pneumococc* AND conjugat* AND (vaccin* OR immun*)' AND 'economic OR cost-effectiveness OR cost-benefit OR cost-utility OR cost-effectiveness OR cost-benefit OR cost-utility' in the abstract, title or keyword fields. To be included, each study had to be a full EE of a PCV and conducted for an LMIC. Studies were extracted and reviewed by two authors. The review involved standard extraction of the study overview or the characteristics of the study, key drivers or parameters of the EE, assumptions behind the analyses and major areas of uncertainty. RESULTS Out of 134 records identified, 22 articles were included. Seven studies used a Markov model for analysis, while 15 studies used a decision-tree analytic model. Eighteen studies performed a cost-utility analysis (CUA), with disability-adjusted life-years, quality-adjusted life-years or life-years gained as a measure of health outcome, while four studies focused only on cost-effectiveness analysis (CEA). Both CEA and CUA findings were provided by eight studies. Herd effects and serotype replacement were considered in 10 and 13 studies, respectively. The current evidence shows that both the 10-valent and 13-valent PCVs are probably cost effective in comparison with the 7-valent PCV or no vaccination. The most influential parameters were vaccine efficacy and coverage (in 16 of 22 studies), vaccine price (in 13 of 22 studies), disease incidence (in 11 of 22 studies), mortality from IPD and pneumonia (in 8 of 22 studies) and herd effects (in 4 of 22 studies). The findings were found to be supportive of the products owned by the manufacturers. CONCLUSION Our review demonstrated that an infant PCV programme was a cost-effective intervention in most LMICs (in 20 of 22 studies included). The results were sensitive to vaccine efficacy, price, burden of disease and sponsorship. Decision makers should consider EE findings and affordability before adoption of PCVs.
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Affiliation(s)
- Surasak Saokaew
- Center of Health Outcomes Research and Therapeutic Safety (COHORTS), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Center of Pharmaceutical Outcomes Research (CPOR), Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, 46150, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Ajaree Rayanakorn
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, 46150, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - David Bin-Chia Wu
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, 46150, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Nathorn Chaiyakunapruk
- Center of Pharmaceutical Outcomes Research (CPOR), Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand.
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, 46150, Bandar Sunway, Selangor Darul Ehsan, Malaysia.
- School of Population Health, University of Queensland, Brisbane, Australia.
- School of Pharmacy, University of Wisconsin, Madison, USA.
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Le P, Nghiem VT, Swint JM. Post-GAVI sustainability of the Haemophilus influenzae type b vaccine program: The potential role of economic evaluation. Hum Vaccin Immunother 2016; 12:2403-5. [PMID: 27135964 PMCID: PMC5027728 DOI: 10.1080/21645515.2016.1175695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Haemophilus influenzae type b (Hib) can cause severe invasive diseases which are, however, preventable by vaccination. To increase access to Hib vaccine, GAVI – the Vaccine Alliance – has provided financial support for 73 lower income countries worldwide. At the same time, GAVI has been implementing its co-financing policy, requiring recipient countries to pay a portion of vaccine costs and to increase this amount over time. Starting in 2016, 5 countries will stop receiving GAVI funding and procure the vaccine themselves. Although the graduating countries have access to the UNICEF/GAVI tendered vaccine price for 5 more years, the uncertainty in market vaccine price may hamper the post-GAVI program sustainability. A possible increase in vaccine price would cause a significant burden on governmental budgets, discouraging countries to continue the program. As a special tool, economic evaluation (EE) can assist decision makers by identifying the maximum affordable vaccine price for countries to pay. Given that only 6 GAVI-eligible countries have such analyses published, more EEs are necessary to strengthen countries' commitment during this transition period. The information will also be useful for manufacturers to determine their pricing policy.
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Affiliation(s)
- Phuc Le
- a Center for Value-based Care Research , Medicine Institute, Cleveland Clinic , Cleveland , OH , USA
| | - Van T Nghiem
- b Department of Management , Policy and Community Health, The University of Texas School of Public Health , Houston , TX , USA
| | - J Michael Swint
- b Department of Management , Policy and Community Health, The University of Texas School of Public Health , Houston , TX , USA.,c Center for Clinical Research and Evidence-Based Medicine , The University of Texas School of Medicine , Houston , TX , USA
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Pneumonia Prevention during a Humanitarian Emergency: Cost-effectiveness of Haemophilus Influenzae Type B Conjugate Vaccine and Pneumococcal Conjugate Vaccine in Somalia. Prehosp Disaster Med 2015; 30:402-11. [PMID: 26061190 DOI: 10.1017/s1049023x15004781] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Pneumonia is a leading cause of death among children less than five years old during humanitarian emergencies. Haemophilus influenzae type b (Hib) and Streptococcus pneumoniae are the leading causes of bacterial pneumonia. Vaccines for both of these pathogens are available to prevent pneumonia. Problem This study describes an economic analysis from a publicly funded health care system perspective performed on a birth cohort in Somalia, a country that has experienced a protracted humanitarian emergency. METHODS An impact and cost-effectiveness analysis was performed comparing: no vaccine, Hib vaccine only, pneumococcal conjugate vaccine 10 (PCV10) only, and both together administered through supplemental immunization activities (SIAs). The main summary measure was the incremental cost per disability-adjusted life-years (DALYs) averted. One-way sensitivity analysis was conducted for uncertainty in parameter values. RESULTS Each SIA would avert a substantial number of cases and deaths. Compared with no vaccine, the DALYs averted by two SIAs for two doses of Hib vaccine was US $202.93 (lower and upper limits: $121.80-$623.52), two doses of PCV10 was US $161.51 ($107.24-$227.21), and two doses of both vaccines was US $152.42 ($101.20-$214.42). Variables that influenced the cost-effectiveness for each strategy most substantially were vaccine effectiveness, case fatality rates (CFRs), and disease burden. CONCLUSIONS The World Health Organization (WHO) defines a cost-effective intervention as costing one to three times the per capita gross domestic product (GDP; in 2011, for Somalia=US $112). Based on the presented model, Hib vaccine alone, PCV10 alone, or Hib vaccine and PCV10 given together in SIAs are cost-effective interventions in Somalia. The WHO/Strategic Advisory Group of Experts decision-making factors for vaccine deployment appear to have all been met: the disease burden is large, the vaccine-related risk is low, prevention in this setting is more feasible than treatment, the vaccine duration probably is sufficient for the vulnerable period of the child's life, cost is reasonable, and herd immunity is possible.
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