Agence de Medecine Preventive AMP
Agence de Medecine Preventive AMP
Guillermet E.,Agence de Medecine Preventive AMP |
Alfa D.A.,University Abomey Calavi |
Gbodja R.,University Abomey Calavi |
Jaillard P.,Agence de Medecine Preventive AMP
Vaccine | Year: 2017
At the end of 2013, the Government of Benin and Agence de Médecine Préventive (AMP) launched a demonstration project in Comé Health Zone (HZ) to optimize the vaccine supply chain. A key part of the demonstration project was the creation of an “informed push model” of vaccine distribution supported by a new logistician position at the health zone (district) level. At the conclusion of the demonstration project in 2015, the authors conducted an anthropological study consisting of semi-structured interviews with 62 participants to assess how the new model changed the professional identities, roles, responsibilities, and practices of personnel involved in vaccine management during and just after the demonstration project end in Comé HZ. The study found that health workers considered the logistician as a key player in enabling them to perform their public health mission, notably by improving knowledge and practices in vaccine management, providing supportive supervision, and improving the availability of vaccines and other supplies so that immunization sessions could occur more reliably and professionally within the communities they served. The demonstration project was widely accepted among study participants. The study was approved by the Cotonou Ethics Committee (CER-ISBA No. 56 dated 09/04/2015). © 2017 The Authors
Gessner B.D.,Agence de Medecine Preventive AMP |
Halsey N.,Institute for Vaccine Safety
Vaccine | Year: 2016
A new dengue vaccine was associated with increased risk of hospitalized virologically-confirmed disease during year 3 of follow-up among children age 2-5. years. Among hypotheses to explain this finding, we could not distinguish definitively between antibody dependent enhancement, waning immunity, or chance occurrence. However, any theory must account for the following: (a) the signal occurred mainly because of decreased dengue among controls rather than increased dengue among vaccinees; (b) among 48 data points, a statistically significant increase in hospitalization among vaccinated children occurred for only one age group, during one year, and in one region; (c) cumulative risk was similar for vaccinated vs. control children age 2-5. years at the end of year 5 and lower for vaccinated vs. control children among older age groups; (d) the protective effect of vaccine against hospitalization decreased from years 1-2 to years 3-5 of follow-up for all age groups and regions. © 2017 The Author(s).
Gessner B.D.,Agence de Medecine Preventive AMP |
Brooks W.A.,International Center for Diarrhoeal Disease Research |
Brooks W.A.,Johns Hopkins University |
Neuzil K.M.,PATH |
And 5 more authors.
Vaccine | Year: 2013
There is an increasing focus on influenza in low-resourced areas as a vaccine-preventable cause of severelower respiratory disease in young children, especially among those under two years of age. The extentof the disease burden is unclear: current etiologic studies may underestimate the impact of influenzaif recognized or unrecognized infection occurs some time before severe disease manifestations promptspecimen collection for diagnosis. Because of various methodological challenges, a vaccine probe approach was used to estimate vac-cine preventable disease incidence (VPDI) for Streptococcus pneumoniae and Haemophilus influenzae typeb, particularly for pneumonia outcomes among young children. A similar approach could be used todetermine VPDI for influenza. A highly effective vaccine would facilitate this approach; however, withappropriate design, a less than ideal vaccine also could be used to estimate VPDI. Because influenza vac-cine efficacy against severe disease may be greater than against all symptomatic influenza disease, avaccine probe approach could provide a better measure than etiologic studies of the public health utilityof influenza vaccine. The first 6 months of life is a time of particularly increased influenza risk among young children, andan age group for which current vaccines are not approved. Previous studies have found that maternalinfluenza immunization can reduce acute respiratory infection in the infant during this vulnerable period. Additional randomized, controlled trials are currently underway using a vaccine probe approach to esti-mate VPDI among mothers and their infants following maternal influenza immunization. The WorldHealth Organization now identifies pregnant women as the highest priority target group for influenzavaccination. Should countries implement this strategy, infants age 6-23 months likely would remain atincreased risk; vaccine probe approaches could quantify the public health benefit of immunizing thisgroup. © 2013.
Komakhidze T.,Georgia National Center for Disease Control and Public Health |
Hoestlandt C.,Agence de Medecine Preventive AMP |
Dolakidze T.,Georgia National Center for Disease Control and Public Health |
Shakhnazarova M.,Georgia National Center for Disease Control and Public Health |
And 5 more authors.
Vaccine | Year: 2015
Objective: Financial support from the Global Alliance for Vaccines and Immunization (GAVI) to introduce the 10-valent pneumococcal conjugate vaccine (PCV10) into the routine childhood immunization schedule in Georgia is ending in 2015. As a result, the Interagency Coordination Committee (ICC) decided to carry out a cost-effectiveness analysis to gather additional evidence to advocate for an appropriate evidence-based decision after GAVI support is over. The study also aimed to strengthen national capacity to conduct cost-effectiveness studies, and to introduce economic evaluations into Georgia's decision-making process. Methodology: A multidisciplinary team of national experts led by a member of the ICC carried out the analysis that compared two scenarios: introducing PCV10 vs no vaccination. The TRIVAC model was used to evaluate 10 cohorts of children over the period 2014-2023. National data was used to inform demographics, disease burden, vaccine coverage, health service utilization, and costs. Evidence from clinical trials and the scientific literature was used to estimate the impact of the vaccine. A 3. +. 0 schedule and a vaccine price increasing to US$ 3.50 per dose was assumed for the base-case scenario. Alternative univariate and multivariate scenarios were evaluated. Results: Over the 10-year period, PCV10 was estimated to prevent 7170 (8288 undiscounted) outpatient visits due to all-cause acute otitis media, 5325 (6154 undiscounted) admissions due to all-cause pneumonia, 87 (100 undiscounted) admissions due to pneumococcal meningitis, and 508 (588 undiscounted) admissions due to pneumococcal non-pneumonia and non-meningitis (NPNM). In addition, the vaccine was estimated to prevent 41 (48 undiscounted) deaths. This is equivalent to approximately 5 deaths and 700 admissions prevented each year in Georgia. Over the 10-year period, PCV10 would cost the government approximately US$ 4.4 million ($440,000 per year). However, about half of this would be offset by the treatment costs prevented. The discounted cost-effectiveness ratio was estimated to be US$ 1599 per DALY averted with scenarios ranging from US$ 286 to US$ 7787. Discussion: This study led to better multi-sectoral collaboration and improved national capacity to perform economic evaluations. Routine infant vaccination against Streptococcus pneumoniae would be highly cost-effective in Georgia. The decision to introduce PCV10 was already made some time before the study was initiated but it provided important economic evidence in support of that decision. There are several uncertainties around many of the parameters used, but a multivariate scenario analysis with several conservative assumptions (including no herd effect in older individuals) shows that this recommendation is robust. This study supports the decision to introduce PCV10 in Georgia. © 2015 Elsevier Ltd.
Rebaudet S.,Aix - Marseille University |
Mengel M.A.,Agence de Medecine Preventive AMP |
Koivogui L.,Institute National Of Sante Publique Insp |
Moore S.,Aix - Marseille University |
And 9 more authors.
PLoS Neglected Tropical Diseases | Year: 2014
Cholera is typically considered endemic in West Africa, especially in the Republic of Guinea. However, a three-year lull period was observed from 2009 to 2011, before a new epidemic struck the country in 2012, which was officially responsible for 7,350 suspected cases and 133 deaths. To determine whether cholera re-emerged from the aquatic environment or was rather imported due to human migration, a comprehensive epidemiological and molecular survey was conducted. A spatiotemporal analysis of the national case databases established Kaback Island, located off the southern coast of Guinea, as the initial focus of the epidemic in early February. According to the field investigations, the index case was found to be a fisherman who had recently arrived from a coastal district of neighboring Sierra Leone, where a cholera outbreak had recently occurred. MLVA-based genotype mapping of 38 clinical Vibrio cholerae O1 El Tor isolates sampled throughout the epidemic demonstrated a progressive genetic diversification of the strains from a single genotype isolated on Kaback Island in February, which correlated with spatial epidemic spread. Whole-genome sequencing characterized this strain as an "atypical" El Tor variant. Furthermore, genome-wide SNP-based phylogeny analysis grouped the Guinean strain into a new clade of the third wave of the seventh pandemic, distinct from previously analyzed African strains and directly related to a Bangladeshi isolate. Overall, these results highly suggest that the Guinean 2012 epidemic was caused by a V. cholerae clone that was likely imported from Sierra Leone by an infected individual. These results indicate the importance of promoting the cross-border identification and surveillance of mobile and vulnerable populations, including fishermen, to prevent, detect and control future epidemics in the region. Comprehensive epidemiological investigations should be expanded to better understand cholera dynamics and improve disease control strategies throughout the African continent. © 2014 Rebaudet et al.
Vucina V.V.,Croatian Institute of Public Health CIPH |
Filipovic S.K.,Croatian Institute of Public Health CIPH |
Koznjak N.,Croatian Institute for Health Insurance CIHI |
Stamenic V.,Ministry of Health of Republic of Croatia MH |
And 5 more authors.
Vaccine | Year: 2015
Objective Pneumococcus is a known cause of meningitis, pneumonia, sepsis, and acute otitis media in children and adults globally. Two new vaccines for children have the potential to prevent illness, disability, and death, but these vaccines are expensive. The Croatian Ministry of Health has considered introducing the vaccine in the past, but requires economic evidence to ensure that the limited funds available for health care will be used in the most effective way. MethodologyCroatia appointed a multidisciplinary team of experts to evaluate the cost-effectiveness of introducing pneumococcal conjugate vaccination (PCV) into the national routine child immunization program. Both 10-valent and 13-valent PCV (PCV10 and PCV13) were compared to a scenario assuming no vaccination. The TRIVAC decision-support model was used to estimate cost-effectiveness over the period 2014-2033. We used national evidence on demographics, pneumococcal disease incidence and mortality, the age distribution of disease in children, health service utilization, vaccine coverage, vaccine timeliness, and serotype coverage. Vaccine effectiveness was based on evidence from the scientific literature. Detailed health care costs were not available from the Croatian Institute for Health Insurance at the time of the analysis so assumptions and World Health Organization (WHO) estimates for Croatia were used. We assumed a three-dose primary vaccination schedule, and an initial price of US$ 30 per dose for PCV10 and US$ 35 per dose for PCV13. We ran univariate sensitivity analyses and multivariate scenario analyses. ResultsEither vaccine is estimated to prevent approximately 100 hospital admissions and one death each year in children younger than five in Croatia. Compared to no vaccine, the discounted cost-effectiveness of either vaccine is estimated to be around US$ 69,000-77,000 per disability-adjusted life-years (DALYs) averted over the period 2014-2033 (from the government or societal perspective). Only two alternative scenarios were borderline cost-effective (US$ per DALY averted less than 3. ×. GDP per capita of approximately US$ 40,000). The first was a scenario based primarily on the WHO 2008 pneumococcal disease burden estimates for Croatia. The second was a scenario that assumed a fairly dramatic drop in the price of the vaccine over the period. Both vaccines would need to be priced at approximately US$ 20 per dose or less to be considered cost-effective under base-case assumptions. PCV10 would be more cost-effective than PCV13 with base-case assumptions, but this is sensitive to the price of each vaccine. ConclusionBased on estimated health and economic benefits in children alone, PCV is unlikely to be cost-effective in Croatia. Both vaccines would need to be priced at less than US$ 20 per dose to be considered cost-effective for children. Further analyses should be conducted to estimate the health and economic burden of pneumococcal disease in older age groups, and to assess the influence on cost-effectiveness results when short-term and long-term indirect effects are included for older individuals. While there are important uncertainties around the price and effectiveness of both vaccines, our analysis suggests there is insufficient evidence to warrant a significant difference in the price of the two vaccines. © 2014 Elsevier Ltd.
Drach M.,University of Paris Dauphine |
Le Gargasson J.-B.,Agence de Medecine Preventive AMP |
Mathonnat J.,University dAuvergne |
Da Silva A.,Agence de Medecine Preventive AMP |
And 2 more authors.
Vaccine | Year: 2013
The introduction of new vaccines with much higher prices than traditional vaccines results in increas-ing budgetary pressure on immunization programs in GAVI-eligible countries, increasing the need toensure their financial sustainability. In this context, the third EPIVAC (Epidemiology and Vaccinology)technical conference was held from February 16 to 18, 2012 at the Regional Institute of Public Healthin Ouidah, Benin. Managers of ministries of health and finance from 11 West African countries (GAVIeligible countries), as well as former EPIVAC students and European experts, shared their knowledge andbest practices on immunization financing at district and country level.The conference concluded by stressing five major priorities for the financial sustainability of nationalimmunization programs (NIPs) in GAVI-eligible countries.- Strengthen public financing by increasing resources and fiscal space, improving budget processes,increasing contribution of local governments and strengthen efficiency of budget spending.- Promote equitable community financing which was recognized as a significant and essential contri-bution to the continuity of EPI operations.- Widen private funding by exploring prospects offered by sponsorship through foundations dedicatedto immunization and by corporate social responsibility programs.- Contain the potential crowding-out effect of GAVI co-financing and ensure that decisions on newvaccine introductions are evidence-based.- Seek out innovative financing mechanisms such as taxes on food products or a national solidarityfund. © 2013.
Ahmeti A.,Institute of Public Health |
Preza I.,Institute of Public Health |
Simaku A.,Institute of Public Health |
Nelaj E.,Institute of Public Health |
And 6 more authors.
Vaccine | Year: 2015
Background: Rotavirus vaccines have been introduced in several European countries but can represent a considerable cost, particularly for countries that do not qualify for any external financial support. This study aimed to evaluate the cost-effectiveness of introducing rotavirus vaccination into Albania's national immunization program and to inform national decision-making by improving national capacity to conduct economic evaluations of new vaccines. Methods: The TRIVAC model was used to assess vaccine impact and cost-effectiveness. The model estimated health and economic outcomes attributed to 10 successive vaccinated birth cohorts (2013-2022) from a government and societal perspective. Epidemiological and economic data used in the model were based on national cost studies, and surveillance data, as well as estimates from the scientific literature. Cost-effectiveness was estimated for both the monovalent (RV1) and pentavalent vaccines (RV5). A multivariate scenario analysis (SA) was performed to evaluate the uncertainty around the incremental cost-effectiveness ratios (ICERs). Results: With 3% discounting of costs and health benefits over the period 2013-2022, rotavirus vaccination in Albania could avert 51,172 outpatient visits, 14,200 hospitalizations, 27 deaths, 950 disability-adjusted life-years (DALYs), and gain 801 life-years. When both vaccines were compared to no vaccination, the discounted cost per DALY averted was US$ 2008 for RV1 and US$ 5047 for RV5 from a government perspective. From the societal perspective the values were US$ 517 and US$ 3556, respectively. Conclusion: From both the perspectives, the introduction of rotavirus vaccine to the Albanian immunization schedule is either cost-effective or highly cost-effective for a range of plausible scenarios. In most scenarios, including the base-case scenario, the discounted cost per DALY averted was less than three times the gross domestic product (GDP) per capita. However, rotavirus vaccination was not cost-effective when rotavirus cases and deaths were based on plausible minimum estimates. Introduction of RV1 would yield similar benefits at lower cost. © 2015 Elsevier Ltd.
PubMed | Institute of Public Health, London School of Hygiene and Tropical Medicine, Agence de Medecine Preventive AMP and Pan American Health Organization WHO PAHO
Type: | Journal: Vaccine | Year: 2015
Rotavirus vaccines have been introduced in several European countries but can represent a considerable cost, particularly for countries that do not qualify for any external financial support. This study aimed to evaluate the cost-effectiveness of introducing rotavirus vaccination into Albanias national immunization program and to inform national decision-making by improving national capacity to conduct economic evaluations of new vaccines.The TRIVAC model was used to assess vaccine impact and cost-effectiveness. The model estimated health and economic outcomes attributed to 10 successive vaccinated birth cohorts (2013-2022) from a government and societal perspective. Epidemiological and economic data used in the model were based on national cost studies, and surveillance data, as well as estimates from the scientific literature. Cost-effectiveness was estimated for both the monovalent (RV1) and pentavalent vaccines (RV5). A multivariate scenario analysis (SA) was performed to evaluate the uncertainty around the incremental cost-effectiveness ratios (ICERs).With 3% discounting of costs and health benefits over the period 2013-2022, rotavirus vaccination in Albania could avert 51,172 outpatient visits, 14,200 hospitalizations, 27 deaths, 950 disability-adjusted life-years (DALYs), and gain 801 life-years. When both vaccines were compared to no vaccination, the discounted cost per DALY averted was US$ 2008 for RV1 and US$ 5047 for RV5 from a government perspective. From the societal perspective the values were US$ 517 and US$ 3556, respectively.From both the perspectives, the introduction of rotavirus vaccine to the Albanian immunization schedule is either cost-effective or highly cost-effective for a range of plausible scenarios. In most scenarios, including the base-case scenario, the discounted cost per DALY averted was less than three times the gross domestic product (GDP) per capita. However, rotavirus vaccination was not cost-effective when rotavirus cases and deaths were based on plausible minimum estimates. Introduction of RV1 would yield similar benefits at lower cost.
Senouci K.,Agence de Medecine Preventive AMP |
Blau J.,Agence de Medecine Preventive AMP |
Nyambat B.,Korean International Vaccine Institute |
Coumba Faye P.,Agence de Medecine Preventive AMP |
And 6 more authors.
Vaccine | Year: 2010
Multiple health priorities, limited human resources and logistical capacities, as well as expensive vaccines with limited funds available increase the need for evidence-based decision making in immunization programs. The aim of the Supporting Independent Immunization and Vaccine Advisory Committees (SIVAC) Initiative is to support countries in the establishment or strengthening of National Immunization Technical Advisory Groups (NITAGs) that provide recommendations on immunization policies and programs (e.g., vaccination schedules, improvements of routine immunization coverage, new vaccine introduction, etc.). SIVAC, a program funded by the Bill & Melinda Gates Foundation, is based on a country-driven, step-by-step process that ensures its support is tailored to country needs and emphasizes NITAG sustainability. SIVAC supports countries by reinforcing the capacities of the NITAG scientific and technical secretariat and by providing specific support activities established in consultation with the country and other international partners. Additionally, SIVAC and partners have built an electronic platform, the NITAG Resource Center, that provides information, tools, and briefings to NITAGs and the immunization community. © 2010 Elsevier Ltd. All rights reserved.