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This article is part of the Research Topic 'Health Systems Recovery in the Context of COVID-19 and Protracted Conflict'. The third quarter of 2022 saw COVID-19 cases and deaths in Thailand reduced significantly, and high levels of COVID-19 vaccine coverage. COVID-19 was declared an "endemic" disease, and economic activities resumed. This paper reviews pre-pandemic health systems capacity and identifies pandemic response strengths, weaknesses and lessons that guided resilient and equitable health system recovery. Robust health systems and adaptive strategies drive an effective pandemic response. To support health system recovery Thailand should (1) minimize vulnerability and extend universal health coverage to include migrant workers and dependents; (2) sustain provincial primary healthcare (PHC) capacity and strengthen PHC in greater Bangkok; (3) leverage information technology for telemedicine and teleconsultation; (4) enhance and extend case and event-based surveillance of notifiable diseases, and for public health threats, including pathogens with pandemic potential in wildlife and domesticated animals. This requires policy and financial commitment across successive governments, adequate numbers of committed and competent health workforce at all levels supported by over a million village health volunteers, strong social capital and community resilience. A strengthened global health architecture and international collaboration also have critical roles in establishing local capacities to develop and manufacture pandemic response products through transfer of technology and know-how. Countries should engage in the ongoing Inter-government Negotiating Body to ensure a legally binding instrument to safeguard the world from catastrophic impacts of future pandemics.
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COVID-19 , Animais , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Pandemias/prevenção & controle , Tailândia/epidemiologia , GovernoRESUMO
Assessing the cost of vaccine preventable diseases (VPD) surveillance is becoming more important in the context of the Global Polio Eradication Initiative (GPEI) funding transition, since GPEI support to polio surveillance helped the incremental building of VPD surveillance systems in many countries, including low income countries such as Nepal. However, there is limited knowledge on the cost of conducting VPD surveillance, especially the national cost for surveillance of multiple vaccine-preventable diseases. The current study sought to calculate the economic and financial costs of Nepal's comprehensive VPD surveillance systems from July 2016 to July 2017. At thecentral level, all surveillance units were included in the sample. At sub-national level, a purposive sampling strategy was used to select a representative sample from locations involved in conducting surveillance. The sub-national sample costs were extrapolated to the nationwide VPD surveillance system. Nepal's total annual economic cost of VPD surveillance was USD 4.81 million or USD 0.18 per capita, while the total financial cost was USD 4.38 million or USD 0.16 per capita. Government expenditures accounted for 56% of the total economic cost, and World Health Organization accounting for 44%. The biggest cost driver was personnel accounting for 51% of the total economic cost. WHO supported trained surveillance personnel through donor funding, mainly from Global Polio Eradication Initiative. As a polio transition priority country, Nepal will need to make strategic choices to fully self-finance or seek full donor support or a mixed-financing model as polio program funding diminishes.
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Poliomielite , Doenças Preveníveis por Vacina , Gastos em Saúde , Humanos , Nepal/epidemiologia , Poliomielite/epidemiologia , Poliomielite/prevenção & controle , Organização Mundial da SaúdeRESUMO
PROBLEM: Seven months after the April 2015 Nepal earthquake, and as relief efforts were scaling down, health authorities faced ongoing challenges in health-service provision and disease surveillance reporting. APPROACH: In January 2016, the World Health Organization recruited and trained 12 Nepalese medical doctors to provide technical assistance to the health authorities in the most affected districts by the earthquake. These emergency support officers monitored the recovery of health services and reconstruction of health facilities, monitored stocks of essential medicines, facilitated disease surveillance reporting to the health ministry and assisted in outbreak investigations. LOCAL SETTING: In December 2015 the people most affected by the earthquake were still living in temporary shelters, provision of health services was limited and only five out of 14 earthquake-affected districts were reporting surveillance data to the health ministry. RELEVANT CHANGES: From mid-2016, health facilities were gradually able to provide the same level of services as in unaffected areas, including paediatric and adolescent services, follow-up of tuberculosis patients, management of respiratory infections and first aid. The number of districts reporting surveillance data to the health ministry increased to 13 out of 14. The proportion of health facilities reporting medicine stock-outs decreased over 2016. Verifying rumours of disease outbreaks with field-level evidence, and early detection and containment of outbreaks, allowed district health authorities to focus on recovery and reconstruction. LESSONS LEARNT: Local medical doctors with suitable experience and training can augment the disaster recovery efforts of health authorities and alleviate their burden of work in managing public health challenges during the recovery phase.
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Terremotos , Instalações de Saúde , Acessibilidade aos Serviços de Saúde , Serviços de Saúde , Adolescente , Criança , Desastres , Medicina de Emergência , Humanos , NepalRESUMO
The Immunization Systems Management Group (IMG) was established to coordinate and oversee objective 2 of the Polio Eradication and Endgame Strategic Plan 2013-2018, namely, (1) introduction of ≥1 dose of inactivated poliovirus vaccine in all 126 countries using oral poliovirus vaccine (OPV) only as of 2012, (2) full withdrawal of OPV, starting with the withdrawal of its type 2 component, and (3) using polio assets to strengthen immunization systems in 10 priority countries. The IMG's inclusive, transparent, and partnership-focused approach proved an effective means of leveraging the comparative and complementary strengths of each IMG member agency. This article outlines 10 key factors behind the IMG's success, providing a potential set of guiding principles for the establishment and implementation of other interagency collaborations and initiatives beyond the polio sphere.
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Erradicação de Doenças , Saúde Global , Programas de Imunização , Poliomielite/prevenção & controle , Vacina Antipólio de Vírus Inativado/administração & dosagem , Vacina Antipólio Oral/administração & dosagem , Erradicação de Doenças/métodos , Erradicação de Doenças/organização & administração , Humanos , Programas de Imunização/métodos , Programas de Imunização/organização & administração , Objetivos OrganizacionaisRESUMO
A total of 35 of the 59 countries that had not eliminated maternal and neonatal tetanus (MNT) as a public health problem in 1999 have since achieved the MNT-elimination goal. Neonatal tetanus deaths have decreased globally from 200,000 in 2000 to 49,000 in 2013. This is the result of increased immunization coverage with tetanus toxoid-containing vaccines among pregnant women, improved access to skilled birth attendance during delivery, and targeted campaigns with these vaccines for women of reproductive age in high-risk areas. In the process, inequities have been reduced, private-public partnerships fostered, and innovations triggered. However, lack of funding, poor accessibility to some areas, suboptimal surveillance, and a perceived low priority for the disease are among the main obstacles. To ensure MNT elimination is sustained, countries must build and maintain strong routine programs that reach people with vaccination and with clean deliveries. This should also be an opportunity to shift programs into preventing tetanus among all people. Regular assessments, and where needed appropriate action, are key to prevent increases in MNT incidence over time, especially in areas that are at higher risk. The main objective of the paper is to provide a detailed update on the progress toward MNT elimination between 1999 and 2014. It elaborates on the challenges and opportunities, and discusses how MNT elimination can be sustained and to shift the program to protect wider populations against tetanus.
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Vaccines, such as HPV vaccine, are increasingly administered to school-age children, and school-based immunization is an approach that can be used to reach these children. Limited information has thus far been published that provides an overview of the school-based approach worldwide. This article, based on self-reported data from countries, summarizes the extent to which a school-based immunization approach is used around the world, and what antigens are most frequently being administered. Of the 174 countries for which data on school-based immunization were available, ninety five countries reported using a school-based approach for immunization. Children in grades 1 and 6 (or at an age corresponding with these grades) are most often targeted, and tetanus and diphtheria toxoids are the most frequently administered antigens. The impact of the school-based approach may be reduced in areas with low school attendance, unless specific measures are taken to target out-of-school children. Methods to monitor coverage need to be standardized and data on coverage and on the reach of the approach need to be more systematically analyzed and reported.
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Vacinas Bacterianas/administração & dosagem , Imunização/métodos , Instituições Acadêmicas , Vacinas Virais/administração & dosagem , Adolescente , Criança , Pré-Escolar , Feminino , Saúde Global , Humanos , Imunização/estatística & dados numéricos , MasculinoRESUMO
BACKGROUND: Integration of HIV infant testing into immunization sessions is one of the strategies designed to increase coverage of early infant diagnosis. OBJECTIVE: To determine the evidence on the outcomes of such integration. METHODS: A systematic review of peer-reviewed and grey literature was undertaken from electronic sources such as MEDLINE, Google Scholar, websites of international agencies, past conferences and ministries of health reports published between year 2002 and 2013. Randomized controlled trials, observational and qualitative studies were searched and those meeting selection criteria were selected and relevant information extracted using structured tool. Statistical pooling was not possible owing to the heterogeneity of the study designs and outcome measures. RESULTS: Of the nine articles which met the selection criteria, none used a randomized controlled design. Of these, five articles measured mother's acceptability of their infants being tested for HIV during its first pentavalent or DPT vaccination visit, and 89·5-100% accepted. Four articles reported the proportion of mothers who returned for HIV test results, ranging from 56·8% to 86·0%. Increased uptake of HIV testing following integration was confirmed by two articles. Only one study in Tanzania determined the uptake of vaccinations following integration, with urban facilities showing stable or slight increase of monthly vaccine uptake while decreases were observed across the rural sites. In two articles, stigma was perceived by service-providers and mothers as the potential risk following integration, particularly in rural settings. DISCUSSION: Despite the limited number of articles, the findings in this systematic review suggest that HIV testing during immunization clinic visits is acceptable and feasible as a possible model for service delivery. However, the impact on vaccination uptake needs further study.
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Infecções por HIV/diagnóstico , Programas de Imunização , Programas de Rastreamento/organização & administração , Humanos , LactenteRESUMO
Background: Integration of HIV infant testing into immunization sessions is one of the strategies designed to increase coverage of early infant diagnosis. Objective: To determine the evidence on the outcomes of such integration. Methods: A systematic review of peer-reviewed and grey literature was undertaken from electronic sources such as MEDLINE, Google Scholar, websites of international agencies, past conferences and ministries of health reports published between year 2002 and 2013. Randomized controlled trials, observational and qualitative studies were searched and those meeting selection criteria were selected and relevant information extracted using structured tool. Statistical pooling was not possible owing to the heterogeneity of the study designs and outcome measures. Results: Of the nine articles which met the selection criteria, none used a randomized controlled design. Of these, five articles measured mother's acceptability of their infants being tested for HIV during its first pentavalent or DPT vaccination visit, and 89·5-100% accepted. Four articles reported the proportion of mothers who returned for HIV test results, ranging from 56·8% to 86·0%. Increased uptake of HIV testing following integration was confirmed by two articles. Only one study in Tanzania determined the uptake of vaccinations following integration, with urban facilities showing stable or slight increase of monthly vaccine uptake while decreases were observed across the rural sites. In two articles, stigma was perceived by service-providers and mothers as the potential risk following integration, particularly in rural settings. Discussion: Despite the limited number of articles, the findings in this systematic review suggest that HIV testing during immunization clinic visits is acceptable and feasible as a possible model for service delivery. However, the impact on vaccination uptake needs further study.
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Since the launch of the Global Polio Eradication Initiative (GPEI) in 1988, the number of polio endemic countries has declined from 125 to 3 in 2013. Despite this remarkable achievement, ongoing circulation of wild poliovirus in polio-endemic countries and the increase in the number of circulating vaccine-derived poliovirus cases, especially those caused by type 2, is a cause for concern. The Polio Eradication and Endgame Strategic Plan 2013-2018 (PEESP) was developed and includes 4 objectives: detection and interruption of poliovirus transmission, containment and certification, legacy planning, and a renewed emphasis on strengthening routine immunization (RI) programs. This is critical for the phased withdrawal of oral poliovirus vaccine, beginning with the type 2 component, and the introduction of a single dose of inactivated polio vaccine into RI programs. This objective has inspired renewed consideration of how the GPEI and RI programs can mutually benefit one another, how the infrastructure from the GPEI can be used to strengthen RI, and how a strengthened RI can facilitate polio eradication. The PEESP is the first GPEI strategic plan that places strong and clear emphasis on the necessity of improving RI to achieve and sustain global polio eradication.
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Erradicação de Doenças/métodos , Erradicação de Doenças/organização & administração , Imunização/métodos , Imunização/estatística & dados numéricos , Poliomielite/prevenção & controle , Vacinas contra Poliovirus/administração & dosagem , Saúde Global , HumanosRESUMO
Addressing inequities in immunisation must be the main priority for the Decade of Vaccines. Children who remain unreached are those who need vaccination - and other health services - most. Reaching these children and other underserved target groups will require a reorientation of current approaches and resource allocation. At the country level, evidence-based and context-specific strategies must be developed to promote equity in ways that strengthen the system that facilitates vaccination, are sustainable and extend benefits across the life cycle. At the global level, more attention must go on ensuring sustainable and affordable supply for low- and middle-income countries to vaccine products that are appropriate for the contexts where needs are greatest. Finally, data must be disaggregated and used at all levels to monitor and guide progress to reach the unreached.
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Acessibilidade aos Serviços de Saúde , Disparidades em Assistência à Saúde/tendências , Imunização/tendências , Vacinas , Criança , Países em Desenvolvimento , Humanos , Cooperação Internacional , Alocação de RecursosRESUMO
With the introduction of new vaccines, developing countries are facing serious challenges in their vaccine supply and logistics systems. Storage capacity bottlenecks occur at national, regional, and district levels and system inefficiencies threaten vaccine access, availability, and quality. As countries adopt newer and more expensive vaccines and attempt to reach people at different ages and in new settings, their logistics systems must be strengthened and optimized. As a first step, national governments, donors, and international agencies have crafted a global vision for 2020 vaccine supply and logistics systems with detailed plans of action to achieve five priority objectives. Vaccine products and packaging are designed to meet the needs of developing countries. Immunization supply systems support efficient and effective vaccine delivery. The environmental impact of energy, materials, and processes used in immunization systems is minimized. Immunization information systems enable better and more timely decision-making. Competent and motivated personnel are empowered to handle immunization supply chain issues. Over the next decade, vaccine supply and logistics systems in nearly all developing countries will require significant investments of time and resources from global and national partners, donors, and governments. These investments are critical if we are to reach more people with current and newer vaccines.
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Programas de Imunização/organização & administração , Vacinas/provisão & distribuição , Países em Desenvolvimento , Armazenamento de Medicamentos , Sistemas de Informação em Saúde , Humanos , Cooperação Internacional , Recursos HumanosRESUMO
Within the overall framework set out in the Global Immunization Vision and Strategy (GIVS) for the period 2006-2015, over 70 countries had developed comprehensive Multi-Year Plans (cMYPs) by 2008, outlining their plans for implementing the GIVS strategies and for attaining the GIVS Goals at the midpoint in 2010 or earlier. These goals are to: (1) reach ≥90% and ≥80% vaccination coverage at national and district level, respectively; and (2) reduce measles-related mortality by 90% compared with the 2000 level. Fifty cMYPs were analysed along the four strategic areas of the GIVS: (1) protecting more people in a changing world; (2) introducing new vaccines and technologies; (3) integrating immunization, other health interventions and surveillance in the health system context; and (4) immunizing in the context of global interdependence. By 2010, all 50 countries planned to have introduced hepatitis B (HepB) vaccine, 48 the Haemophilus influenzae type B (Hib) vaccine and only a few countries had firm plans to introduce pneumococcal or rotavirus vaccines. Countries seem to be inadequately prepared in terms of cold-chain requirements to deal with the expected increases in storage that will be required for vaccines, and in making provisions to establish a corresponding surveillance system for planned new vaccine introductions. Immunization contacts are used to deliver other health interventions, especially in the countries in the World Health Organization (WHO) Africa Region. The cost for the planned immunization activities will double to U$27 per infant, of which U$5 per infant is the expected shortfall. Global Alliance for Vaccines and Immunization (GAVI) funding is becoming the largest contributor to immunization programmes.
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Vacinação em Massa/organização & administração , Saúde Global/estatística & dados numéricos , Vacinas Anti-Haemophilus/uso terapêutico , Planejamento em Saúde/organização & administração , Humanos , Cooperação Internacional , Vacinação em Massa/estatística & dados numéricos , Sarampo/mortalidade , Sarampo/prevenção & controle , Vacina contra Sarampo/uso terapêutico , Objetivos Organizacionais , Vigilância da População , Vacinas contra Hepatite Viral/uso terapêuticoRESUMO
BACKGROUND: The Global Immunization Vision and Strategy (GIVS) (2006-2015) aims to reach and sustain high levels of vaccine coverage, provide immunization services to age groups beyond infancy and to those currently not reached, and to ensure that immunization activities are linked with other health interventions and contribute to the overall development of the health sector. OBJECTIVE: To examine mid-term progress (through 2010) of the immunization coverage goal of the GIVS for 194 countries or territories with special attention to data from 68 countries which account for more than 95% of all maternal and child deaths. METHODS: We present national immunization coverage estimates for the third dose of diphtheria and tetanus toxoid with pertussis (DTP3) vaccine and the first dose of measles containing vaccine (MCV) during 2000, 2005 and 2010 and report the average annual relative percent change during 2000-2005 and 2005-2010. Data are taken from the WHO and UNICEF estimates of national immunization coverage, which refer to immunizations given during routine immunization services to children less than 12 months of age where immunization services are recorded. RESULTS: Globally DTP3 coverage increased from 74% during 2000 to 85% during 2010, and MCV coverage increased from 72% during 2000 to 85% during 2010. A total of 149 countries attained or were on track to achieve the 90% coverage goal for DTP3 (147 countries for MCV coverage). DTP3 coverage ≥ 90% was sustained between 2005 and 2010 by 99 countries (98 countries for MCV). Among 68 priority countries, 28 countries were identified as having made either insufficient or no progress towards reaching the GIVS goal of 90% coverage by 2015 for DTP3 or MCV. DTP3 and MCV coverage remained < 70% during 2010 for 16 and 21 priority countries, respectively. CONCLUSION: Progress towards GIVS goals highlights improvements in routine immunization coverage, yet it is troubling to observe priority countries with little or no progress during the past five years. These results highlight that further efforts are needed to achieve and maintain the global immunization coverage goals.
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Vacina contra Difteria, Tétano e Coqueluche/administração & dosagem , Saúde Global , Programas de Imunização , Imunização/estatística & dados numéricos , Vacina contra Sarampo/administração & dosagem , Humanos , Imunização/tendências , Lactente , Objetivos Organizacionais , Avaliação de Programas e Projetos de Saúde , Nações Unidas , Organização Mundial da SaúdeAssuntos
Mortalidade da Criança , Mortalidade Infantil , Mortalidade Materna , Modelos Teóricos , Criança , Feminino , Promoção da Saúde , Humanos , Lactente , Recém-NascidoRESUMO
BACKGROUND: Neonatal tetanus remains an important and preventable cause of neonatal mortality globally. Large reductions in neonatal tetanus deaths have been reported following major increases in the coverage of tetanus toxoid immunization, yet the level of evidence for the mortality effect of tetanus toxoid immunization is surprisingly weak with only two trials considered in a Cochrane review. OBJECTIVE: To review the evidence for and estimate the effect on neonatal tetanus mortality of immunization with tetanus toxoid of pregnant women, or women of childbearing age. METHODS: We conducted a systematic review of multiple databases. Standardized abstraction forms were used. Individual study quality and the overall quality of evidence were assessed using an adaptation of the GRADE approach. Meta-analyses were performed. RESULTS: Only one randomised controlled trial (RCT) and one well-controlled cohort study were identified, which met inclusion criteria for meta-analysis. Immunization of pregnant women or women of childbearing age with at least two doses of tetanus toxoid is estimated to reduce mortality from neonatal tetanus by 94% [95% confidence interval (CI) 80-98%]. Additionally, another RCT with a case definition based on day of death, 3 case-control studies and 1 before-and-after study gave consistent results. Based on the consistency of the mortality data, the very large effect size and that the data are all from low/middle-income countries, the overall quality of the evidence was judged to be moderate. CONCLUSION: This review uses a standard approach to provide a transparent estimate of the high impact of tetanus toxoid immunization on neonatal tetanus.
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Imunidade Materno-Adquirida , Toxoide Tetânico/administração & dosagem , Tétano/mortalidade , Tétano/prevenção & controle , Adulto , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
OBJECTIVE: Given the increased attention on the need for booster immunizations of older children and adolescents, as well as new primary vaccine series that specifically target school-age children and adolescents, we reviewed the current state of vaccine delivery to school-age children and adolescents in low- and middle-income countries. METHODS: We searched the published literature and unpublished sources for articles, meeting presentations, technical reports and program documents related to immunization policies and programs for school-age children and/or adolescents between 6 and 19 years of age in low- and middle-income countries. FINDINGS: We found several examples of ongoing school-age children and adolescent immunization in low- and middle-income countries. Reasons to vaccinate this age group include vaccines specifically targeted for this age group, waning immunity from prior vaccination, "catch-up" vaccination, acceleration of disease control or elimination efforts, and age distribution shift in the incidence of vaccine-preventable diseases. Multiple delivery strategies are currently in use: routine immunization, supplementary immunization activities, and Child Health Days and similar activities. Vaccines can be delivered in fixed sites, or through outreach. Most immunization programs that target adolescents and school-aged children are providing boosters of infant vaccines at school entry age, with scant experience in delivery of primary vaccination series in adolescents. Few of these programs have been formally evaluated and dissemination of lessons learned is limited. CONCLUSIONS: This baseline description may facilitate immunization program planning in countries considering vaccinating this age group. Additionally, this summary may inform plans for operational research and program evaluation designed to expand vaccine delivery to school-age children and adolescents in low- and middle-income countries.
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Imunização/economia , Programas Nacionais de Saúde/economia , Adolescente , Adulto , Criança , Feminino , Humanos , Imunização/legislação & jurisprudência , Masculino , Programas Nacionais de Saúde/legislação & jurisprudência , Programas Nacionais de Saúde/organização & administração , Fatores SocioeconômicosRESUMO
BACKGROUND: In late 2005, Nepal demonstrated through surveys that it had reached the World Health Organization criterion for having eliminated neonatal tetanus (NT), i.e. NT cases occurred at a rate of less than 1 per 1000 live births in every district. This paper summarizes how a combination of strategies contributed to this success. METHODS: For each of the 4 strategies (clean delivery, routine immunization, supplemental immunization campaigns, and surveillance) activities before and after 2000 are described and achievements are summarized using published and unpublished data. RESULTS: Through routine immunization of pregnant women with tetanus toxoid (TT), NT cases had decreased substantially by 1999, but the final push was provided through the national TT supplemental immunization activities in 2000-2004, which raised the proportion of children protected at birth against tetanus to above 80%. Fewer than 20% of deliveries take place with trained assistance. Although NT surveillance has improved since the extensive Acute Flaccid Paralysis/Polio surveillance infrastructure in Nepal was made available for the NT elimination initiative, it is likely that a number of cases still occur without being reported, particularly in rural areas. CONCLUSIONS: NT elimination was achieved in 2005 in Nepal, but activities must continue and be strengthened to ensure that NT incidence will not increase in the future. The introduction and further expansion of school-based immunization will, in combination with diphtheria-tetanus-pertussis vaccine given in infancy, reduce the need for future cohorts of childbearing age women to be immunized at every pregnancy. However, booster doses will still need to be given in early adulthood to ensure ongoing protection.
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Programas de Imunização/organização & administração , Tétano/prevenção & controle , Adolescente , Adulto , Clostridium tetani/imunologia , Feminino , Humanos , Mortalidade Infantil , Recém-Nascido , Nepal/epidemiologia , Vigilância da População , Gravidez , Saúde Pública , Tétano/epidemiologia , Toxoide Tetânico , Adulto JovemRESUMO
Maternal and neonatal tetanus are important causes of maternal and neonatal mortality, claiming about 180 000 lives worldwide every year, almost exclusively in developing countries. Although easily prevented by maternal immunisation with tetanus toxoid vaccine, and aseptic obstetric and postnatal umbilical-cord care practices, maternal and neonatal tetanus persist as public-health problems in 48 countries, mainly in Asia and Africa. Survival of tetanus patients has improved substantially for those treated in hospitals with modern intensive-care facilities; however, such facilities are often unavailable where the tetanus burden is highest. The Maternal and Neonatal Tetanus Elimination Initiative assists countries in which maternal and neonatal tetanus has not been eliminated to provide immunisation with tetanus toxoid to women of childbearing age. The ultimate goal of this initiative is the worldwide elimination of maternal and neonatal tetanus. Since tetanus spores cannot be removed from the environment, sustaining elimination will require improvements to presently inadequate immunisation and health-service infrastructures, and universal access to those services. The renewed worldwide commitment to the reduction of maternal and child mortality, if translated into effective action, could help to provide the systemic changes needed for long-term elimination of maternal and neonatal tetanus.