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Issue 51 | Global Vaccine Market Report 2024; Efficacy, reactogenicity, and safety of the RZV vaccine in Chinese adults ≥ 50 years: A randomized, placebo-controlled trial

Journal Content Recommendation

01

Global Vaccine Market Report 2024: Achievements and Challenges of the 50-Year Immunization Program

On December 19, 2024, the World Health Organization (WHO) released the 2024 Global Vaccine Market Report (GVMR) on its official website. The release coincides with the 50th anniversary of the Expanded Programme on Immunization (EPI), marking a significant milestone. Over the past half-century, EPI has saved more than 150 million lives and contributed to a remarkable 40% reduction in global infant mortality rates. However, despite these significant achievements, stagnation in childhood immunization coverage over the years continues to raise widespread concerns within the global immunization community, leaving millions of children unprotected by vaccines year after year.

The 2024 GVMR provides a comprehensive overview of the global vaccine market in 2023. It covers data from 116 manufacturers producing 88 vaccine products distributed through various procurement channels across 207 countries and regions worldwide. The report not only delves into the market dynamics of vaccines across countries and regions with different income levels but also reveals overall trends in market changes based on historical data. This provides a systematic perspective for understanding various vaccine markets and their common challenges.

The report offers valuable market insights to governments, vaccine manufacturers, global public health institutions, and other decision-makers. It helps stakeholders identify challenges and opportunities in vaccine accessibility, thereby advancing equitable vaccine coverage. This goal aligns closely with the Action Initiative to Accelerate Vaccine Equity proposed in the 2022 Global Vaccine Market Report, an initiative that remains highly relevant in the current global health context.

The WHO hopes that by deepening the understanding of vaccine markets, global stakeholders can collaborate to elevate immunization programs to higher levels, ensuring that vaccines protect more children and communities. This will lay a solid foundation for the sustainable development of global public health.

https://www.who.int/publications/m/item/global-vaccine-market-report-2024

02

Efficacy, reactogenicity, and safety of the adjuvanted recombinant zoster vaccine for the prevention of herpes zoster in Chinese adults ≥ 50 years: A randomized, placebo-controlled trial

This article was published by Human Vaccines & Immunotherapeutic. This study was an IV observer-blind study (NCT04869982) conducted between 2021 and 2023 in China, and aims to evaluate the efficacy and safety of the recombinant zoster vaccine (RZV) in immunocompetent Chinese adults aged 50 and above. Phase III multi-country studies (ZOE-50/70) demonstrated that the adjuvanted RZV was well tolerated and prevented herpes zoster (HZ) in healthy adults ≥ 50-year-olds, with vaccine efficacy (VE) > 90% across age groups. However,  these pivotal trials did not enroll participants from mainland China where RZV is licensed, therefore similar clinical data are missing for this population.

The study was conducted across six centers in China from May 2021 to April 2023, enrolling a total of 6,138 healthy participants aged 50 and above. Participants were randomly assigned into two groups in a 1:1 ratio to receive two doses of the RZV or a placebo, administered two months apart. The primary objective was to evaluate the overall efficacy of the vaccine, with a descriptive analysis by age groups (50–69 years and ≥70 years). The study also assessed the vaccine’s tolerability and safety. During a mean follow-up period of 15.2 (±1.1) months, 31 HZ episodes were confirmed (RZV = 0; placebo = 31) for an incidence rate of 0.0 vs 8.2 per 1000 person-years and an overall VE of 100% (89.82–100). The descriptive VE was 100% (85.29–100) for 50–69-year-olds and 100% (60.90–100) for ≥ 70-year-olds. 

Solicited adverse events (AEs) were more frequent in the RZV vs the placebo group (median duration: 1–3 days for both groups). Pain and fatigue were the most frequent local and general AEs (RZV: 72.1% and 43.4%; placebo: 9.2% and 5.3%).  The frequencies of unsolicited AEs, serious AEs, potential immune-mediated diseases, and deaths were similar between both groups. 

The study results indicate that RZV demonstrates good tolerability and efficacy in preventing herpes zoster among Chinese adults aged 50 and above, consistent with efficacy findings observed in populations of similar age and medical characteristics worldwide. This discovery provides strong scientific evidence for the broader use of RZV in China, further supporting its role as an effective tool for preventing herpes zoster in individuals aged 50 and above.

*This study was funded by GlaxoSmithKline Biologicals SA.

https://doi.org/10.1080/21645515.2024.2351584

03

Evaluating potential program cost savings with a single-dose HPV vaccination schedule: a modeling study

This article was published by JNCI Monographs, aiming to evaluate the potential cost-saving benefits of the World Health Organization (WHO)-recommended single-dose HPV vaccination program. Although current evidence on cost savings from single-dose schedules is limited, this study utilized modeling to analyze the program’s advantages in terms of vaccine procurement and distribution costs.

The analysis leveraged primary data during a study evaluating the HPV vaccine delivery costs and operational context in 5 countries (Ethiopia, Guyana, Rwanda, Sri Lanka, and Uganda) implementing a two-dose schedule. To estimate the cost for the single-dose schedule, we adjusted the two-dose schedule cost estimates to account for differences in the frequency of activities, whether activities differed by HPV vaccine dose or session, and differences in relative quantity or storage volume of HPV vaccines delivered. We estimated the cost per dose and cost per adolescent receiving the full (single-dose or two-dose) vaccination schedule in 2019 US dollars from a health system perspective.

 The results indicate that while the per-dose cost of a single-dose regimen may be slightly higher, the average cost per adolescent completing the full vaccination schedule is significantly reduced. For the two-dose regimen, the financial cost per adolescent ranged from $9.64 in Sri Lanka to $23.43 in Guyana; for the single-dose regimen, this cost dropped to $4.84 and $12.34, respectively, achieving savings of up to 50%. In terms of economic costs, the single-dose regimen ranged from $7.86 in Rwanda to $28.53 in Guyana.

The study demonstrates that a single-dose HPV vaccination program can significantly reduce the costs of immunization programs while enhancing their economic affordability and sustainability. This finding provides crucial evidence for countries to optimize their HPV vaccination strategies, facilitating broader vaccine coverage and contributing to the achievement of global public health goals.

https://doi.org/10.1093/jncimonographs/lgae037

04

2024 Pneumonia & Diarrhea Progress Report Card by Johns Hopkins University

The 2024 Global Action Plan for Pneumonia and Diarrhea (GAPPD) report, published by the International Vaccine Access Center (IVAC) at Johns Hopkins University, aims to track and evaluate progress on 10 key GAPPD interventions in the 15 countries and regions with the highest burden of child pneumonia and diarrhea mortality. These interventions include the administration of five vaccines (the third dose of the diphtheria, tetanus, and pertussis vaccine (DTP3), the first dose of the measles-containing vaccine (MCV1), the third dose of the Haemophilus influenzae type b vaccine (Hib3), the third dose of the pneumococcal conjugate vaccine (PCV3), and the final dose of the rotavirus vaccine (RotaC) as well as treatment indicators.

The report reveals that the included countries have not achieved the target of 90% overall vaccine coverage, and progress in vaccine rollout remains uneven. Coverage rates for DTP3 (72%), Hib3 (72%), and PCV3 (73%) are relatively high, while RotaC has yet to be introduced in some countries, such as Chad and Somalia, where coverage remains at 0%. India and Tanzania have excelled, with multiple vaccine coverage rates exceeding 90%.

Notable improvements in vaccine coverage were observed in some countries: Niger’s MCV1 coverage rose by 15 percentage points, Madagascar’s PCV3 coverage increased by 16 percentage points, and Nigeria’s RotaC coverage surged by 37 percentage points. Angola and Chad also showed progress in PCV3 and basic vaccine coverage (DTP3, Hib3, and MCV1), respectively. However, significant declines were noted in the Democratic Republic of Congo and Sudan, with Sudan’s RotaC coverage dropping by 23 percentage points.

Overall, global vaccine coverage continues to face challenges, particularly in the rollout of rotavirus and pneumococcal vaccines in resource-limited countries. Greater efforts are needed to close the coverage gaps between countries and ensure equitable access to these life-saving vaccines.

https://publichealth.jhu.edu/ivac/resources/pneumonia-diarrhea-progress-reports

Policy Updates

01

Notice on the Issuance of the “Shandong Province Compensation Measures for Adverse Reactions to Vaccination (2024 Edition)” by the Shandong Provincial Administration for Disease Control and Prevention, Shandong Provincial Department of Finance, and Shandong Provincial Health Commission

The “Shandong Province Compensation Measures for Adverse Reactions to Vaccination (2024 Edition)” has been jointly issued by the Shandong Provincial Administration for Disease Control and Prevention (SPADCP), the Provincial Department of Finance, and the Provincial Health Commission and will come into effect on January 15, 2025. This revision aims to further standardize compensation work for adverse reactions to vaccination across the province and ensure the continuity and legality of related policies. The revision is based on the “Notice on the Transfer of Responsibilities and Rights” issued by the Shandong Provincial Health Commission in 2024, which specified the transfer of responsibilities for compensating adverse reactions to immunization program vaccines to the SPADCP. To adapt to new circumstances and management needs, the “2019 Edition of Measures” has undergone a comprehensive update after five years of implementation.

The new “Measures” consist of five chapters and 37 articles, covering all aspects of compensation work, including General Provisions, Investigation, Diagnosis, and Appraisal, Compensation Standards and Calculation Methods, Application Acceptance and Compensation Procedures, and Supplementary Provisions. This revision further clarifies legal bases, removes the now-repealed “Regulations on Vaccine Circulation and Vaccination Management,” and adjusts responsibility assignments, consolidating related duties under joint management by the SPADCP and health departments. Additionally, the delivery of investigation and diagnosis conclusions has been changed from an “expert group” to “disease prevention and control institutions,” and the reimbursement procedures for appraisal fees have been optimized. Regarding compensation procedures, the new “Measures” specify detailed processing timelines and documentation requirements, and introduce exploratory provisions for compensation via commercial insurance, reflecting a trend toward diversifying compensation mechanisms.

Furthermore, while the new “Measures” retain the compensation standards and calculation methods of the “2019 Edition,” they add restrictive clauses for compensation in cases not conforming to laws, regulations, or related departmental provisions to further ensure fairness and justice. The document also proposes optimizing work procedures for grading harm severity and provides clearer guidance on legal recourse.

The issuance of the “2024 Edition Measures” not only strengthens the protection of vaccine recipients’ rights but also establishes a solid institutional foundation for the healthy development of vaccination efforts across the province. By enhancing inter-departmental coordination and optimizing compensation mechanisms, the new “Measures” further improve the scientific and standardized management of vaccine safety in the province, demonstrating Shandong Province’s strong commitment to safeguarding public health security.

http://wsjkw.shandong.gov.cn/zwgk/fdzdgknr/gfxwj/202412/t20241212_4777632.html

Content Editor: Xiaotong Yang

Page Editor: Ziqi Liu

Others

代表性地区的基本情况、接种政策及效果、宣传推动情况

(1) 成都市

 

基本情况

成都市2022年度GDP为20817.5亿元,排名全国城市第七。成都市出台了《健康城市建设推动健康中国行动创新模式成都市宫颈癌综合防控试点工作方案》等一系列相关政策推动适龄女孩HPV疫苗接种工作。

接种政策及效果

目标人群为13-14岁在校且无HPV疫苗接种史女生。免疫程序为国产二价0-6二剂次、进口二价0-1-6三剂次、进口四价0-2-6三剂次。资助政策为国产二价疫苗(沃泽惠)免费,其它疫苗补贴600元/人,并自付20元/剂接种费。疫苗接种按照属地化管理原则,由学校所在地预防接种单位负责。截至2022年1月,目标人群首针接种率达90.04%[14]。

宣传推动

成都市开展多形式、多载体的健康教育宣传。形式包括讲座、知晓日、义诊咨询、专题课程、专题活动等,载体包括宣传册、宣传栏、展板、电视、微信、视频号、抖音平台等,覆盖相关医疗机构300余、社区300余个、和公众场所90余个。面向适龄女孩及监护人、适龄女性及全体市民开展广泛宣教,宣传材料发放至近9万名群众,讲座活动覆盖近2万名群众。宣教内容包括HPV疫苗接种、两癌防控、其它女性常见疾病防控等。

(2) 济南市

 

基本情况

济南市2022年度GDP为12027.5亿元,位列全国城市排名20。2021年,济南市出台《健康城市建设推动健康中国行动创新模式试点一济南市宫颈癌综合防治工作方案(2021—2025年)》等一系列相关政策推动适龄女孩HPV疫苗接种工作。

接种政策及效果

目标人群为≤14周岁且无HPV疫苗接种史的在校七年级女生。免疫程序为国产二价0-6二剂次。资助政策免费接种。疫苗接种按照属地化管理原则,安排分班级分时段前往学校所在地的预防接种单位进行接种。截至2022年11月,目标人群首针接种率达
94.4%[15].

宣传推动

济南市开展多形式、多载体的健康教育宣传。形式包括采访、线上线下专题活动,载体包括网络媒体、纸媒、科普展板、宣传手册、子宫颈癌与HPV疫苗知识读本、济南HPV疫苗接种手册,宣教人群广泛涵盖全体市民,宣教内容包括HPV疫苗接种、两癌防控等知识。

(3) 鄂尔多斯市

 

基本情况

鄂尔多斯市2022年度GDP为5613.44亿元,全国地级市第45位。2021年,鄂尔多斯市出台了《健康城市建设推动健康鄂尔多斯行动创新模式工作方案》等一系列相关政策推动适龄女孩HPV疫苗接种工作。

接种政策及效果

2020年8月,鄂尔多斯市在准格尔旗率先开展HPV疫苗免费接种项目。目标人群为全市当年13-18岁在校且无HPV疫苗接种史女生。免疫程序为进口二价0-1-6三剂次,

2023年起调整为13-14岁女孩0-6二剂次。资助政策为疫苗免费,自付20元/剂接种费。组织方式为疫苗接种服务中心根据任务安排联系学校,有规划的通知适龄女孩前来完成HPV疫苗接种。截至2022年11月,目标人群首针接种率接近70%[16]。

2022年8月,启动准格尔旗和达拉特旗高三女生接种四价和九价HPV疫苗的试点工作,利用暑假时间展开接种,力争在2023年年底达成90%的接种目标[17]。自鄂尔多斯之后,由政府主导的HPV疫苗惠民行动在多地等涌现。值得注意的是,近年来多主体参与到HPV疫苗支持项目,如慈善总会、医院、妇联等为主体单位牵头组织开展了一些公益活动。

宣传推动

鄂尔多斯市开展多形式、多载体的健康教育宣传。形式包括讲座、知晓日、义诊咨询、专题课程、专题活动等,载体包括宣传册、宣传栏、展板、电视、微信、视频号、抖音平台等,宣教人群广泛涵盖在校女孩及监护人,适龄女性及全体市民。宣教内容包括HPV疫苗接种、两癌防控、其它女性常见疾病防控等。

(4) 西安市

 

基本情况

西安市2022年度GDP为11486.51亿元,排名全国第22位。2021年,西安市出台了《西安市健康城市建设推动健康中国行动创新模式试点宫颈癌综合防治工作方案》等一系列相关政策推动适龄女孩HPV疫苗接种工作。

接种政策及效果

目标人群为全市年龄满13周岁(初中)在校女生。免疫程序为国产二价0-6二剂次,进口二价0-1-6三剂次,进口四价和进口九价0-2-6三剂次。接种政策为自愿自费。各区(县)合理设立HPV疫苗专项疫苗接种门诊承担接种任务,并及时将接种信息统一录入儿童免疫规划信息平台。

宣传推动

西安市出台了《西安市宫颈癌综合防治宣传方案》(市健办发〔2022〕12号)。通过媒体宣传、社区活动、义诊等形式,宣传册、宣传栏、展板、电视、微信公众号、报纸等载体普及宫颈癌防治相关知识。

(5) 西藏自治区

 

基本情况

西藏自治区2022年度GDP为2132.64亿元,经济总量整体规模相对其他省份较小,人均GDP处于全国中等偏下水平。2022年出台《西藏自治区妇女“两癌”综合防治工作实施方案》等系列政策推动适龄女孩HPV疫苗接种。

接种政策及效果

目标人群为13-14岁在校女生。免疫程序为国产二价0-6二剂次。资助政策为免费。由学校组织,接种者在商定接种时间携带个人身份证明材料与法定监护人一同前往定点接种单位接种。

宣传推动

充分利用网络、电视、广播、报刊等媒介,以群众喜闻乐见的宣传方式,对适龄在校女生HPV疫苗接种工作的意义及内容进行广泛宣传。

近年来各地HPV疫苗惠民项目信息

“疾病负担”指标解读

疾病负担(burden of disease, BOD)是指疾病造成的失能(伤残)、生活质量下降和过早死亡对健康和社会造成的总损失,包括疾病的流行病学负担和经济负担两个方面。

 

在疾病的流行病学方面,衡量疾病负担的常用指标包括传统指标和综合指标。

 

传统指标

传统疾病负担的衡量指标包括:用于描述和反映健康状况与水平的常规指标,如死亡人数、伤残人数和患病人数等绝对数指标;以及用来比较不同特征人群疾病分布差异的指标,如发病率、伤残率、患病率、死亡率、门诊和住院率等相对数指标。

 

上述传统疾病负担的衡量指标基本上只考虑了人口的生存数量,而忽略了生存质量,不够全面;但优势在于资料相对计算方便,结果直观,可用于各种疾病的一般性描述。

 

综合指标

疾病负担不等同于死亡人数,综合指标弥补了传统指标的单一性,且可以让各种不同疾病造成的负担之间相互比较。

 

潜在寿命损失年(YPLL):通过疾病造成的寿命损失来估计疾病负担的大小。但忽略了疾病造成的失能对生存质量的影响。

 

伤残调整寿命年(DALYs):将死亡和失能相结合,用一个指标来描述疾病的这两方面的负担。它包括因早死造成健康生命年的损失(YLL)和因伤残造成健康生命年的损失(YLD),即DALY=YLL+YLD。目前,DALY是国内外一致公认的最具代表性、运用最多的疾病负担评价指标。

 

健康期望寿命(HALE):指具有良好健康状态的生命年以及个体在比较舒适的状态下生活的平均预期时间,综合考虑生命的质量和数量两方面。

 

 

随着疾病负担研究的深入,其测量范围从流行病学负担扩大到经济负担。

 

疾病经济负担是由于发病、伤残(失能)和过早死亡给患者本人、家庭以及社会带来的经济损失,和由于预防治疗疾病所消耗的经济资源。

详细见:疾病的“经济负担”怎么计算?

 

参考资料:

陈文. 卫生经济学 [M]. 人民卫生出版社. 2017.

李茜瑶,周莹,黄辉等.疾病负担研究进展[J].中国公共卫生,2018,34(05):777-780.

什么是“年龄标化”?

在流行病学研究中,年龄是多种疾病的危险因素。以发病率为例,该指标反映了一定时期内,特定人群中癌症新发病例的情况。由于年龄是癌症发生的一个重要影响因素,年龄越大,发病率就越高。

 

如果两个国家的人群年龄结构相差很大,例如A市老年人口比例更大,B市年轻人口占比更高,直接比较两地癌症发病率的高低,我们不能确定发病率较高的市,是因为年龄构成不同还是因为其他影响因素(如饮食习惯、环境等)所导致。因此,需要用“年龄标化”的统计学方法,进一步处理数据,排除年龄影响因素的干扰,再来比较两地的发病率数据。

 

以发病率为例,即把原始数据套到一个“标准年龄结构人群里”,计算出”年龄标化发病率“,这样人群结构不同的A市和B市,就能在同一个指标尺度下进行“发病率”比较。年龄标化通常有“中标率”,即我国各地基于某一年份的中国人口年龄结构构成作为标准计算,国内不同地区的疾病数据比较采用的是“中标率”;另一种是“世标率”,即用世界标准人口构成机型标化计算,适用于国与国之间的指标比较。

 

同样地,以死亡率为例,应特别注意各之间地人口构成的差异。用标准化死亡率进行比较才能得出正确结论。如甲、乙两地在未标化前的肺癌死亡率相同,但实际上乙地人群的肺癌死亡率要明显地高于甲地,其原因在于甲地男性老年人口居多,而肺癌的死亡率又与年龄和性别有关,所以用未标化率进行比较时,就会得出甲乙两地肺癌死亡率相同的错误结论。

 

参考资料:

 

张科宏教授:年龄标化的患病率 – 丁香公开课 (dxy.cn)

科学网—癌症(粗)发病率与标化发病率的区别 – 杨雷的博文 (sciencenet.cn)

WHO年龄标化死亡率定义及计算方法

沈洪兵,齐秀英. 流行病学 [M]. 人民卫生出版社. 2015.

疾病的“经济负担”怎么计算?

疾病经济负担是由于发病、伤残(失能)和过早死亡给患者本人、家庭以及社会带来的经济损失,和由于预防治疗疾病的费用。通过计算疾病的经济负担,可以从经济层面上研究或比较不同疾病对人群健康的影响。

总疾病经济负担包括直接疾病经济负担、间接疾病经济负担和无形疾病经济负担。

直接经济负担:指直接用于预防和治疗疾病的总费用,包括直接医疗经济负担和直接非医疗经济负担两部分。直接医疗经济负担是指在医药保健部门购买卫生服务的花费,主要包括门诊费(如挂号费、检查费、处置费、诊断费、急救费等)、住院费(如手术费、治疗费等)和药费等。直接非医疗经济负担包括和疾病有关的营养费、交通费、住宿费、膳食费、陪护费和财产损失等。

间接经济负担:指由于发病、伤残(失能)和过早死亡给患者本人和社会带来的有效劳动力损失而导致的经济损失。具体包括:劳动工作时间损失、个人工作能力和效率降低造成的损失、陪护病人时损失的劳动工作时间、精神损失等。

无形经济负担:指患者及亲友因疾病在心理、精神和生活上遭受的痛苦、悲哀、不便等生活质量下降而产生的无形损失。

 

参考资料:

陈文. 卫生经济学 [M]. 人民卫生出版社. 2017.

李茜瑶,周莹,黄辉等.疾病负担研究进展[J].中国公共卫生,2018,34(05):777-780.