Barriers to vaccine coverage and its solutions.

Worldwide, pneumonia, diarrhea, and malaria remain leading causes of death for children under the age of five, even though these diseases are preventable and can be treated. In public health, complex behavioral change interventions are often used. These interventions employ multi-component strategies and work on domains, such as education, policy, and environmental change, to promote prevention, control, and management of childhood diseases. In Tando Muhammad Khan (TMK), the Community Mobilization and Community Incentivization (CoMIC) trial employed a complex, participatory community engagement strategy and included conditional community-based incentives and showed promising results by improving child health related behaviors. A study was conducted to explore the experiences and perceptions of community members regarding the implementation and engagement processes of the CoMIC trial. A total of 13 IDIs and 16 FGDs were conducted to understand the factors behind the community engagement and behavior change that led to the success of the CoMIC trial and its adaptability for wider scale-up. The study identified four key motives for driving community engagement: egoism, altruism, collectivism, and principlism. The community’s close-knit social structure and shared sense of collective growth played a crucial role in encouraging participation and adapting to required behaviors. The trial focused on empowering the community by reinforcing health-seeking behaviors as a community responsibility, promoting cost-sharing to ensure long-term sustainability, and creating collective ownership through active community engagement and Conditional, Collective, Community-based Incentives (C3Is). By strengthening WASH and IYCF practices, increasing immunization uptake, promoting care-seeking behaviors, the intervention aimed to reduce the burden of childhood illnesses such as diarrhea, pneumonia, and malaria, ultimately improving child health outcomes.全球范围内，肺炎、腹泻与疟疾仍是5岁以下儿童的主要致死病因，尽管此类疾病均可预防、可治。公共卫生领域常采用复杂的行为改变干预措施，这类干预采用多组分策略，覆盖教育、政策、环境变革等多个领域，以推动儿童疾病的预防、管控与管理。在坦多穆罕默德汗县（Tando Muhammad Khan, TMK），社区动员与社区激励（Community Mobilization and Community Incentivization, CoMIC）试验采用了复杂的参与式社区参与策略，纳入有条件的社区激励机制，并在改善儿童健康相关行为方面展现出积极成效。本研究旨在探究社区成员对CoMIC试验实施与参与流程的体验与认知。研究共开展13次深入访谈（In-Depth Interviews, IDIs）与16次焦点小组讨论（Focus Group Discussions, FGDs），以解析推动CoMIC试验成功的社区参与与行为改变背后的影响因素，以及该试验在更大范围推广的适配性。研究识别出驱动社区参与的四大核心动机：利己主义、利他主义、集体主义与原则主义。社区紧密的社会结构与共有的集体成长共识，对鼓励参与及适配所需行为发挥了关键作用。该试验聚焦于赋能社区，将寻求健康服务的行为强化为社区共同责任，推广成本分担机制以保障长期可持续性，并通过主动的社区参与与有条件、集体化、社区为本的激励措施（Conditional, Collective, Community-based Incentives, C3Is）建立集体主人翁意识。本干预通过强化水、环境卫生与个人卫生（Water, Sanitation and Hygiene, WASH）实践与婴幼儿喂养（Infant and Young Child Feeding, IYCF）行为，提升免疫接种覆盖率，推广就医行为，旨在减轻腹泻、肺炎与疟疾等儿童疾病的负担，最终改善儿童健康结局。