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Abstract
ABSTRACT
Introduction. Malaria vaccination is an important additional strategy for preventing childhood malaria, but successful implementation depends on caregiver confidence and reliable service delivery. Evidence from conflict-affected settings in Cameroon remains limited. This study explored perspectives on malaria vaccine acceptance, hesitancy and implementation challenges in the North-West Region of Cameroon. Materials and Methods. A qualitative component was nested concurrently within a mixed-methods study in selected communities and health facilities in Bamenda and Bamenda III Health Districts. In-depth interviews were conducted with 18 mothers of children under five years, and key-informant interviews involved 26 healthcare workers and malaria vaccine programme implementers. Data were analysed thematically through familiarisation, coding, development and review of themes, and interpretation in relation to the study objectives. Results. Mothers described concerns about vaccine safety and effectiveness, fear of future vaccine resistance, limited vaccine availability, inadequate knowledge, and negative reports from early recipients. Implementers described caregiver hesitancy, poor community awareness, insecurity and difficult access to communities, vaccine shortages and supply delays, inadequate training and staffing, and cultural and religious beliefs. The findings showed a persistent gap between willingness to vaccinate and the practical availability and accessibility of vaccination services. Conclusion. Malaria vaccine acceptance may be undermined by both demand-side concerns and supply-side constraints.
RÉSUMÉ
Introduction. La vaccination contre le paludisme constitue une stratégie complémentaire importante pour prévenir le paludisme chez l’enfant, mais le succès de sa mise en œuvre dépend de la confiance des personnes qui s’occupent des enfants et de la fiabilité des services fournis. Les données issues de zones touchées par des conflits au Cameroun restent limitées. Cette étude a exploré les points de vue sur l’acceptation du vaccin contre le paludisme, les réticences à l’égard de celui-ci et les défis liés à sa mise en œuvre dans la région du Nord-Ouest du Cameroun. Matériel et méthodes. Un volet qualitatif a été intégré simultanément à une étude utilisant des méthodes mixtes, menée dans des communautés et des établissements de santé sélectionnés des districts sanitaires de Bamenda et de Bamenda III. Des entretiens approfondis ont été menés auprès de 18 mères d’enfants de moins de cinq ans, et des entretiens avec des informateurs clés ont été réalisés auprès de 26 professionnels de santé et responsables de la mise en œuvre du programme de vaccination contre le paludisme. Les données ont été analysées de manière thématique à travers les étapes suivantes : familiarisation, codage, élaboration et révision des thèmes, puis interprétation au regard des objectifs de l’étude. Résultats. Les mères ont fait part de leurs inquiétudes concernant la sécurité et l’efficacité du vaccin, de leur crainte d’une future résistance au vaccin, de la disponibilité limitée du vaccin, d’un manque de connaissances et de témoignages négatifs émanant des premiers bénéficiaires. Les responsables de la mise en œuvre ont évoqué les hésitations des aidants, la faible sensibilisation de la communauté, l’insécurité et la difficulté d’accès aux communautés, les pénuries de vaccins et les retards d’approvisionnement, l’insuffisance de la formation et des effectifs, ainsi que les croyances culturelles et religieuses. Les résultats ont mis en évidence un écart persistant entre la volonté de vacciner et la disponibilité et l’accessibilité concrètes des services de vaccination. Conclusion. L’acceptation du vaccin contre le paludisme peut être compromise tant par des préoccupations du côté de la demande que par des contraintes du côté de l’offre.
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References
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References
1. Antonio-Nkondjio C, Ndo C, Njiokou F, Bigoga JD, Awono-Ambene P, Etang J. Review of malaria situation in Cameroon: technical viewpoint on challenges and prospects for disease elimination. Parasit Vectors. 2019;12:501.
2. World Health Organization. World malaria report 2023. Geneva: WHO; 2023.
3. World Health Organization. WHO recommends groundbreaking malaria vaccine for children at risk. Geneva: WHO; 2021.
4. Ndoula ST, Mboussou F, Njoh AA, Nembot R, Baonga SF, Njinkeu A, et al. Malaria vaccine introduction in Cameroon: early results 30 days into rollout. Vaccines. 2024;12:346. doi:10.3390/vaccines12040346.
5. Dimala CA, Kika BT, Kadia BM, Blencowe H. Current challenges and proposed solutions to the effective implementation of the RTS,S/AS01 malaria vaccine program in sub-Saharan Africa: a systematic review. PLoS One. 2018;13(12):e0209744.
6. Adeshina OO, Nyame S, Milner J, Milojevic A, Asante KP. Barriers and facilitators to nationwide implementation of the malaria vaccine in Ghana. Health Policy Plan. 2023;38(1):28-37.
7. Mboussou F, Ndoula ST, Nembot R. Setting up a data system for monitoring malaria vaccine introduction readiness and uptake in 42 health districts in Cameroon. BMJ Glob Health. 2024;9:e015312. doi:10.1136/bmjgh-2024-015312.
8. Menaca A, Tagbor H, Adjei R, Bart-Plange C, Collymore Y, Ba-Nguz A, et al. Factors likely to affect community acceptance of a malaria vaccine in two districts of Ghana: a qualitative study. PLoS One. 2014;9(10):e109707.
9. Bam V, Mohammed A, Kusi-Amponsah A, Armah J, Lomotey AY, Budu HI, et al. Caregivers’ perception and acceptance of malaria vaccine for children. PLoS One. 2023;18(7):e0288686.
10. Nyalundja AD, Bugeme PM, Guillaume AS, Ntaboba AB, Hatu’m VU, Tamuzi JL, Katoto PD. Socio-demographic factors influencing malaria vaccine acceptance for under-five children in a malaria-endemic region: a community-based study in the Democratic Republic of Congo. Vaccines. 2024;12(4):380.
11. Njoh AA, Dinga JN, Kongnyuy EJ, Ndoula TS, Amani A, Madaina I, et al. Malaria vaccine acceptance and associated factors in Cameroon: a nationwide cross-sectional survey. Vaccine. 2025;60:127323.
12. Idang MA, Nsobinenyui D, Ukah CE, Yunika LK, Ngu CN, Wefuan RF, et al. Knowledge and attitudes of caregivers of under-five children toward the malaria vaccine in the Tiko Health District, Cameroon: a community-based cross-sectional study. medRxiv. 2025.
13. Okesanya OJ, Atewologun F, Lucero-Prisno DE III, Adigun OA, Oso TA, Manirambona E, Okon II. Bridging the gap to malaria vaccination in Africa: challenges and opportunities. J Med Surg Public Health. 2024;2:100059.
14. Sulaiman SK, Musa MS, Tsiga-Ahmed FI, Dayyab FM, Sulaiman AK, Bako AT. A systematic review and meta-analysis of the prevalence of caregiver acceptance of malaria vaccine for under-five children in low-income and middle-income countries. PLoS One. 2022;17 (12):e0278224.
15. Mfonkou Toumansie JD, Messanga Essengue LL, Boumkwo PB, Mbang M, Yopndoi C, Nsangou MM, et al. Digitalization of vaccination schedules and SMS-based appointment reminders within the South Cameroun Coordination of the Expanded Programme of Immunization: project process, implementation, and public health implications. Health Sci Dis. 2026;27(6):131-136. doi:10.5281/zenodo.20162780.
16. Nyangono Ndongo M, Adidja Amani, Wadjou Chimi G, Soppo Lobe VC, Dongmo Tiodjou R, Mbole JM, et al. Connaissances, attitudes et pratiques du personnel de la pyramide sanitaire en équipements de la chaîne de froid du Programme Elargi de Vaccination dans la Région du Centre du Cameroun. Health Sci Dis. 2023;24(3). doi:10.5281/hsd.v24i3.4251.
17. Nsagha Dickson S, Njamnshi AK. Knowledge, attitudes and practices relating to malaria in a semi-urban area of Cameroon. Health Sci Dis. 2013;11(3). doi:10.5281/hsd.v11i3.61.
