Expert Review of Vaccines最新文献

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Adult vaccination against respiratory infections in Egypt: a review of expert opinions. 埃及成人呼吸道感染疫苗接种:专家意见综述。
IF 5.5 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-05-14 DOI: 10.1080/14760584.2024.2348608
Ashraf Madkour, Adel M Elsayed, Hala Sweed, Ibrahim El Ebrashy, Magdy Abdelhamid, Mohamed Zidan
{"title":"Adult vaccination against respiratory infections in Egypt: a review of expert opinions.","authors":"Ashraf Madkour, Adel M Elsayed, Hala Sweed, Ibrahim El Ebrashy, Magdy Abdelhamid, Mohamed Zidan","doi":"10.1080/14760584.2024.2348608","DOIUrl":"10.1080/14760584.2024.2348608","url":null,"abstract":"<p><strong>Introduction: </strong>Lower respiratory tract infection is one of the leading causes of morbidity and mortality all over the world, with a substantial impact on healthcare costs. In Egypt, local consensus on its burden, diagnosis, and vaccination is scarce. This expert opinion is the first to address the local recommendations for vaccinating adults against respiratory infection. It sheds light on the growing need to understand the barriers and underpublicized concept of adult vaccination in Egypt.</p><p><strong>Areas covered: </strong>A collaborative multidisciplinary panel from Egypt developed an expert opinion-based suggestions/points, including epidemiology, microbiology, and highlights on vaccination in Egypt, as well as challenges and recommendations regarding adult vaccination.</p><p><strong>Expert opinion: </strong>Adult vaccinations against respiratory infections are now recommended for high-risk people by all healthcare regulatory bodies. However, it was acknowledged that there may be hesitancy and concerns among patients; in addition, healthcare professionals' awareness about vaccination guidelines and benefits needs improvement. There are several strategies that could be implemented to enhance vaccine adherence in Egypt. These approaches encompass conducting community education programs, addressing the concerns of patients, and enhancing awareness among healthcare professionals through education, policy changes, and periodical reminders in each healthcare setting.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"561-569"},"PeriodicalIF":5.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140857877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single priming and a booster dose of 10-valent and 13-valent pneumococcal conjugate vaccine (PCV) maintains suppression of vaccine serotype colonization in South African children at 3, 4, and 5 years of age: a single-centre, open-labelled, randomized trial. 南非 3、4 和 5 岁儿童接种 10 价和 13 价肺炎球菌结合疫苗 (PCV) 后,单次接种和加强接种可持续抑制疫苗血清型定植:一项单中心、开放标签、随机试验。
IF 5.5 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-10-22 DOI: 10.1080/14760584.2024.2417856
Courtney P Olwagen, Alane Izu, Lara Van der Merwe, Lisa Jose, Anthonet Koen, Shabir A Madhi
{"title":"Single priming and a booster dose of 10-valent and 13-valent pneumococcal conjugate vaccine (PCV) maintains suppression of vaccine serotype colonization in South African children at 3, 4, and 5 years of age: a single-centre, open-labelled, randomized trial.","authors":"Courtney P Olwagen, Alane Izu, Lara Van der Merwe, Lisa Jose, Anthonet Koen, Shabir A Madhi","doi":"10.1080/14760584.2024.2417856","DOIUrl":"10.1080/14760584.2024.2417856","url":null,"abstract":"<p><strong>Background: </strong>Surveillance on nasopharyngeal <i>Streptococcus pneumoniae</i> carriage in older children would be informative in determining whether a single priming and booster dose of pneumococcal conjugate vaccine (PCV) provides durable protection against pneumococcal disease compared with traditional dosing schedules.</p><p><strong>Methods and objectives: </strong>We report on the secondary study objective to evaluate overall, vaccine-serotype (VT), and non-vaccine serotype (NVT) <i>S. pneumoniae</i> colonization at 3, 4, and 5 years of age in children who were randomized to receive 10-valent or 13-valent PCV formulations at 6 (6w + 1) or 14 (14w + 1) weeks compared with a two-dose primary series (2 + 1), with all children receiving a booster dose at 9 months of age, using a multiplex nanofluidic qPCR assay.</p><p><strong>Results: </strong>The prevalence of overall, VT, or NVT at 5 years of age between the 2 + 1 compared with the 6w + 1 or 14w + 1 groups for both PCV10 and PCV13 did not differ.</p><p><strong>Conclusion: </strong>Although inconclusive, our findings suggest that a reduced 1 + 1 PCV dosing schedule is unlikely to increase breakthrough cases of VT pneumococcal disease in older children, which can inform decision-making on transitioning to a 1 + 1 schedule in South Africa.Clinical trial registration: The trial is registered at www.clinicaltrials.gov (identifier is NCT04275284).</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":"23 1","pages":"1011-1019"},"PeriodicalIF":5.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142461608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The mRNA vaccine, a swift warhead against a moving infectious disease target. mRNA 疫苗是对付移动中的传染病目标的快速弹头。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-03-01 DOI: 10.1080/14760584.2024.2320327
Sheema Mir, Mohammad Mir
{"title":"The mRNA vaccine, a swift warhead against a moving infectious disease target.","authors":"Sheema Mir, Mohammad Mir","doi":"10.1080/14760584.2024.2320327","DOIUrl":"10.1080/14760584.2024.2320327","url":null,"abstract":"<p><strong>Introduction: </strong>The rapid development of mRNA vaccines against SARS-CoV-2 has revolutionized vaccinology, offering hope for swift responses to emerging infectious diseases. Initially met with skepticism, mRNA vaccines have proven effective and safe, reducing vaccine hesitancy amid the evolving COVID-19 pandemic. The COVID-19 pandemic has demonstrated that the time required to modify mRNA vaccines to counter new mutant strains is significantly shorter than the time it takes for pathogens to mutate and generate new variants that can thrive in vaccinated populations. This highlights the notion that mRNA vaccine technology appears to be outpacing viruses in the ongoing evolutionary race.</p><p><strong>Areas covered: </strong>This review article offers valuable insights into several crucial aspects of mRNA vaccine development and deployment, including the fundamentals of mRNA vaccine design and synthesis, the utilization of delivery systems, considerations regarding vaccine safety, the longevity of the immune response, strategies for modifying the original mRNA vaccine to address emerging mutant strains, as well as addressing vaccine hesitancy and potential approaches to mitigate reluctance.</p><p><strong>Expert opinion: </strong>Challenges such as stability, storage, manufacturing complexities, production capacity, allergic reactions, long-term effects, accessibility, and misinformation must be addressed. Despite these hurdles, mRNA vaccine technology holds promise for revolutionizing future vaccination strategies.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"336-348"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139899632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential serotype-specific effectiveness against IPD of pneumococcal conjugate vaccines V114 and PCV20 in children given a 2+1 dosing regimen. 肺炎球菌结合疫苗 V114 和 PCV20 在儿童中对 IPD 的潜在血清型特异性效果,采用 2+1 给药方案。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-04-09 DOI: 10.1080/14760584.2024.2335323
Josiah Ryman, Jeffrey R Sachs, Natalie Banniettis, Thomas Weiss, Maurice Ahsman, Ka Lai Yee, Jessica Weaver
{"title":"Potential serotype-specific effectiveness against IPD of pneumococcal conjugate vaccines V114 and PCV20 in children given a 2+1 dosing regimen.","authors":"Josiah Ryman, Jeffrey R Sachs, Natalie Banniettis, Thomas Weiss, Maurice Ahsman, Ka Lai Yee, Jessica Weaver","doi":"10.1080/14760584.2024.2335323","DOIUrl":"10.1080/14760584.2024.2335323","url":null,"abstract":"<p><strong>Background: </strong>Next generation, higher valency pneumococcal conjugate vaccines (PCVs) are assessed and licensed by comparing the immune response across serotypes shared with the PCVs that are standard of care for prevention of pneumococcal disease.</p><p><strong>Methods: </strong>Using a previously qualified method we predicted the serotype-specific vaccine effectiveness (VE) against invasive pneumococcal disease of V114 and PCV20 for the serotypes shared with PCV13 in an EU, Russian, and Australian pediatric population that is recommended to receive a 2 + 1 dosing regimen.</p><p><strong>Results: </strong>The estimated protective antibody concentrations ranged from 0.03 (serotype 23F) to 1.49 µg/mL (serotype 19F). Predicted VE values for V114 ranged from 79% (serotype 5) to 100% (serotype 23F). V114 had comparable effectiveness to PCV13 for all but one of shared serotypes, with predicted higher effectiveness (in V114) against serotype 3 (93% vs. 65%). Predicted VE values for PCV20 ranged from 47% (serotype 3) to 91% (serotype 14). PCV20 predicted VE was lower than PCV13's for serotypes 4, 19F, 23F, 1, 3, 5, 6A, 7F, and 19A.</p><p><strong>Conclusions: </strong>Predicted serotype-specific VE values suggest that, with a 2 + 1 dosing regimen, V114 will have greater effectiveness than PCV20 against PCV13 serotypes, particularly for the still-prevalent serotype 3. Real-world VE studies will ultimately provide clarity on the effectiveness of novel PCVs and support further confidence in and/or improvements to modeling efforts.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"467-473"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140305373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combatting infectious diarrhea: innovations in treatment and vaccination strategies. 防治传染性腹泻:治疗和疫苗接种策略的创新。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-02-19 DOI: 10.1080/14760584.2023.2295015
Vivek P Chavda, Suneetha Vuppu, Toshika Mishra, Sathvika Kamaraj, Nikita Sharma, Swati Punetha, Anand Sairam, Dixa Vaghela, Narges Dargahi, Vasso Apostolopoulos
{"title":"Combatting infectious diarrhea: innovations in treatment and vaccination strategies.","authors":"Vivek P Chavda, Suneetha Vuppu, Toshika Mishra, Sathvika Kamaraj, Nikita Sharma, Swati Punetha, Anand Sairam, Dixa Vaghela, Narges Dargahi, Vasso Apostolopoulos","doi":"10.1080/14760584.2023.2295015","DOIUrl":"10.1080/14760584.2023.2295015","url":null,"abstract":"<p><strong>Introduction: </strong>The escalating prevalence of infectious diseases is an important cause of concern in society. Particularly in several developing countries, infectious diarrhea poses a major problem, with a high fatality rate, especially among young children. The condition is divided into four classes, namely, acute diarrhea, invasive diarrhea, acute bloody diarrhea, and chronic diarrhea. Various pathogenic agents, such as bacteria, viruses, protozoans, and helminths, contribute to the onset of this condition.</p><p><strong>Areas covered: </strong>The review discusses the scenario of infectious diarrhea, the prevalent types, as well as approaches to management including preventive, therapeutic, and vaccination strategies. The vaccination techniques are extensively discussed including the available vaccines, their advantages as well as limitations.</p><p><strong>Expert opinion: </strong>There are several approaches available to develop new-improved vaccines. In addition, route of immunization is important and aerosols/nasal sprays, oral route, skin patches, powders, and liquid jets to minimize needles can be used. Plant-based vaccines, such as rice, might save packing and refrigeration costs by being long-lasting, non-refrigerable, and immunogenic. Future research should utilize predetermined PCR testing intervals and symptom monitoring to identify persistent pathogens after therapy and symptom remission.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":"23 1","pages":"246-265"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139899633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cost-effectiveness analysis of COVID-19 booster vaccination with BNT162b2 in Japan. 日本 COVID-19 强化接种 BNT162b2 的成本效益分析。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-03-05 DOI: 10.1080/14760584.2024.2323133
Mitsuhiro Nagano, Kazumasa Kamei, Hiroyuki Matsuda, Chihiro Takahashi, Jingyan Yang, Koji Wada, Naohiro Yonemoto
{"title":"Cost-effectiveness analysis of COVID-19 booster vaccination with BNT162b2 in Japan.","authors":"Mitsuhiro Nagano, Kazumasa Kamei, Hiroyuki Matsuda, Chihiro Takahashi, Jingyan Yang, Koji Wada, Naohiro Yonemoto","doi":"10.1080/14760584.2024.2323133","DOIUrl":"10.1080/14760584.2024.2323133","url":null,"abstract":"<p><strong>Background: </strong>The aim of this study was to evaluate the public health and economic impact of the COVID-19 booster vaccination with BNT162b2 in Japan during an Omicron-dominant period from early 2022.</p><p><strong>Research design and methods: </strong>A combined cohort Markov decision tree model estimated the cost-effectiveness of annual or biannual booster vaccination strategies compared to no booster vaccination for those aged 65 years and above, and those aged 60-64 years at high risk as the base case. The societal perspective was primarily considered. We also examined other target populations with different age and risk groups. Sensitivity and scenario analyses with alternative inputs were performed.</p><p><strong>Results: </strong>Annual and biannual vaccination strategies were dominant from the societal perspective in the base case. Incremental Cost Effectiveness Ratios (ICERs) from the payer perspective were JPY 1,752,499/Quality Adjusted Life Year (QALY) for annual vaccination and JPY 2,831,878/QALY for biannual vaccination, both less than the threshold value in Japan (JPY 5 million/QALY). The results were consistent even when examining other target age and risk groups. All sensitivity and scenario analyses indicated that ICERs were below JPY 5 million/QALY.</p><p><strong>Conclusions: </strong>Booster vaccination with the COVID-19 vaccine BNT162b2 is a dominant strategy and beneficial to public health in Japan.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"349-361"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139971565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Progress and challenges in the clinical evaluation of immune responses to respiratory mucosal vaccines. 呼吸道粘膜疫苗免疫反应临床评估的进展与挑战。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-03-12 DOI: 10.1080/14760584.2024.2326094
Xuanxuan Zhang, Jialu Zhang, Si Chen, Qian He, Yu Bai, Jianyang Liu, Zhongfang Wang, Zhenglun Liang, Ling Chen, Qunying Mao, Miao Xu
{"title":"Progress and challenges in the clinical evaluation of immune responses to respiratory mucosal vaccines.","authors":"Xuanxuan Zhang, Jialu Zhang, Si Chen, Qian He, Yu Bai, Jianyang Liu, Zhongfang Wang, Zhenglun Liang, Ling Chen, Qunying Mao, Miao Xu","doi":"10.1080/14760584.2024.2326094","DOIUrl":"10.1080/14760584.2024.2326094","url":null,"abstract":"<p><strong>Introduction: </strong>Following the coronavirus disease pandemic, respiratory mucosal vaccines that elicit both mucosal and systemic immune responses have garnered increasing attention. However, human physiological characteristics pose significant challenges in the evaluation of mucosal immunity, which directly impedes the development and application of respiratory mucosal vaccines.</p><p><strong>Areas covered: </strong>This study summarizes the characteristics of immune responses in the respiratory mucosa and reviews the current status and challenges in evaluating immune response to respiratory mucosal vaccines.</p><p><strong>Expert opinion: </strong>Secretory Immunoglobulin A (S-IgA) is a major effector molecule at mucosal sites and a commonly used indicator for evaluating respiratory mucosal vaccines. However, the unique physiological structure of the respiratory tract pose significant challenges for the clinical collection and detection of S-IgA. Therefore, it is imperative to develop a sampling method with high collection efficiency and acceptance, a sensitive detection method, reference materials for mucosal antibodies, and to establish a threshold for S-IgA that correlates with clinical protection. Sample collection is even more challenging when evaluating mucosal cell immunity. Therefore, a mucosal cell sampling method with high operability and high tolerance should be established. Targets of the circulatory system capable of reflecting mucosal cellular immunity should also be explored.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"362-370"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140039076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Past, present, and future policy considerations regarding meningococcal vaccination in the United States. 美国脑膜炎球菌疫苗接种的过去、现在和未来政策考虑。
IF 5.5 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-09-11 DOI: 10.1080/14760584.2024.2397705
Diana E Clements, Tosin Olaiya, Cindy Burman, Oscar Herrera-Restrepo, Woo-Yun Sohn, Temi Folaranmi, Victoria Abbing-Karahagopian, Gary S Marshall, James H Conway
{"title":"Past, present, and future policy considerations regarding meningococcal vaccination in the United States.","authors":"Diana E Clements, Tosin Olaiya, Cindy Burman, Oscar Herrera-Restrepo, Woo-Yun Sohn, Temi Folaranmi, Victoria Abbing-Karahagopian, Gary S Marshall, James H Conway","doi":"10.1080/14760584.2024.2397705","DOIUrl":"10.1080/14760584.2024.2397705","url":null,"abstract":"<p><strong>Introduction: </strong>In 2005, the United States Advisory Committee on Immunization Practices (ACIP) recommended routine vaccination against invasive meningococcal disease (IMD) caused by serogroups A, C, W, and Y (MenACWY) for all 11-12-year-olds, as well as 2-10-year-olds at high risk. In 2010, a booster dose was recommended for all 16-year-olds, as well as for high-risk patients every 3-5 years. In 2015, optional (as opposed to routine) vaccination against meningococcal serogroup B (MenB) at the preferred age of 16-18 years was recommended (Category B, later changed to shared clinical decision-making). In 2023, a vaccine (MenABCWY) against the five serogroups primarily responsible for IMD in the U.S. became available.</p><p><strong>Areas covered: </strong>This review summarizes the evolution of public policy that led to each milestone vaccine recommendation, reviews epidemiologic data published following the recommendations, and discusses the current state of meningococcal immunization policy.</p><p><strong>Expert opinion: </strong>The use of MenABCWY has the potential to consolidate policy, improve coverage rates for the five serogroups, address disparities in vaccination coverage, and simplify vaccine delivery.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"845-861"},"PeriodicalIF":5.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142125263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hookworm vaccines: current and future directions. 钩虫疫苗:当前和未来的方向。
IF 5.5 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-11-15 DOI: 10.1080/14760584.2024.2410893
Eti R Sarkar, Suchandan Sikder, Paul Giacomin, Alex Loukas
{"title":"Hookworm vaccines: current and future directions.","authors":"Eti R Sarkar, Suchandan Sikder, Paul Giacomin, Alex Loukas","doi":"10.1080/14760584.2024.2410893","DOIUrl":"10.1080/14760584.2024.2410893","url":null,"abstract":"<p><strong>Introduction: </strong>Hookworms infect about half a billion people worldwide and are responsible for the loss of more than two billion disability-adjusted life years. Mass drug administration (MDA) is the most popular preventive approach, but it does not prevent reinfection. An effective vaccine would be a major public health tool in hookworm-endemic areas.</p><p><strong>Areas covered: </strong>We highlight recent human studies where vaccination with irradiated larvae and repeated rounds of infection-treatment have induced partial protection. These studies have emphasized the importance of targeting the infective larvae to generate immunity to prevent adult worms from maturing in the gut. We summarize the current status of human and animal model vaccine trials.</p><p><strong>Expert opinion: </strong>Hookworm infection is endemic in resource-poor developing regions where polyparasitism is common, and vaccine cold chain logistics are complex. Humans do not develop sterile immunity to hookworms, and the elderly are frequently overlooked in MDA campaigns. For all these reasons, a vaccine is essential to create long-lasting protection. The lack of a robust animal model to mimic human hookworm infections is a barrier to the discovery and development of a vaccine, however, there have been major recent advances in human challenge studies which will accelerate the process.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"1029-1040"},"PeriodicalIF":5.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142344473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of global polio eradication strategies: targets, vaccines, and supplemental immunization activities (SIAs). 全球根除脊髓灰质炎战略的演变:目标、疫苗和补充免疫活动 (SIAs)。
IF 6.2 3区 医学
Expert Review of Vaccines Pub Date : 2024-01-01 Epub Date: 2024-06-07 DOI: 10.1080/14760584.2024.2361060
Kimberly M Thompson, Kamran Badizadegan
{"title":"Evolution of global polio eradication strategies: targets, vaccines, and supplemental immunization activities (SIAs).","authors":"Kimberly M Thompson, Kamran Badizadegan","doi":"10.1080/14760584.2024.2361060","DOIUrl":"10.1080/14760584.2024.2361060","url":null,"abstract":"<p><strong>Background: </strong>Despite multiple revisions of targets and timelines in polio eradication plans since 1988, including changes in supplemental immunization activities (SIAs) that increase immunity above routine immunization (RI) coverage, poliovirus transmission continues as of 2024.</p><p><strong>Methods: </strong>We reviewed polio eradication plans and Global Polio Eradication Initiative (GPEI) annual reports and budgets to characterize key phases of polio eradication, the evolution of poliovirus vaccines, and the role of SIAs. We used polio epidemiology to provide context for successes and failures and updated prior modeling to show the contribution of SIAs in achieving and maintaining low polio incidence compared to expected incidence for the counterfactual of RI only.</p><p><strong>Results: </strong>We identified multiple phases of polio eradication that included shifts in targets and timelines and the introduction of different poliovirus vaccines, which influenced polio epidemiology. Notable shifts occurred in GPEI investments in SIAs since 2001, particularly since 2016. Modeling results suggest that SIAs play(ed) a key role in increasing (and maintaining) high population immunity to levels required to eradicate poliovirus transmission globally.</p><p><strong>Conclusions: </strong>Shifts in polio eradication strategy and poliovirus vaccine usage in SIAs provide important context for understanding polio epidemiology, delayed achievement of polio eradication milestones, and complexity of the polio endgame.</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"597-613"},"PeriodicalIF":6.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141173662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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