Trial reportThe Pan African medical journal2015
Improving community based AEFI (Adverse Events Following Immunization) reporting rate through telephone "beep" in a Cameroon health district: a randomized field trial.
Trial report in The Pan African medical journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Empowering citizens to spontaneously report suspected adverse drug reaction: Systematic literature review of interventions and their impact.British journal of clinical pharmacology · 2026Pooled it
- Pooled it
- Experiences and perceptions about vaccines and reporting of adverse events following immunisation: a qualitative study among mothers in Northern Ghana.BMJ public health · 2025Article
- Strategies and interventions to strengthen pharmacovigilance systems in low-income and middle-income countries: a scoping review.BMJ open · 2023Article
- Prevalence and patterns of adverse events following childhood immunization and the responses of mothers in Ile-Ife, South West Nigeria: a facility-based cross-sectional survey.Osong public health and research perspectives · 2023Article
- Drug Safety Monitoring in Health Programs of Cameroon.Journal of pharmacovigilance · 2022Article
- Article
- Evaluation of the adverse events following immunization surveillance system, Ghana, 2019.PloS one · 2022Article
- Optimising reporting of adverse events following immunisation by healthcare workers in Ghana: A qualitative study in four regions.PloS one · 2022Article
- Adverse event following vaccine surveillance in Kaduna State, Northwestern Nigeria (January 2018 -June 2019): analysis of health facility´s records.The Pan African medical journal · 2021Article
- The digital immunization system of the future: imagining a patient-centric, interoperable immunization information system.Therapeutic advances in vaccines and immunotherapy · 2020Review
- The medium, the message and the measure: a theory-driven review on the value of telehealth as a patient-facing digital health innovation.Health economics review · 2019Review
- Factors that influence the intention to use mobile phone caller tunes for patient reporting of adverse drug reactions: a qualitative study.Therapeutic advances in drug safety · 2019Article
- Article
- Evaluation of the adverse events following immunization surveillance system in Guruve district, Mashonaland Central 2017.The Pan African medical journal · 2018Article
- Participant-centred active surveillance of adverse events following immunisation: a narrative review.International health · 2017Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionAEFIs underreporting is one of different barriers to achieving objectives of pharmaco vigilance of vaccine worldwide. Studies describe it as being related to limited awareness of health personnel and of vaccinees or of their parents. The objective was to assess the effect of telephone "beep" on community based reporting rates of AEFIs during routine immunization sessions in a Cameroon Health District.
methodsIt was a randomized control trial implemented during routine EPI in Biyem-Assi health district (Cameroon). Parents of vaccinated children were randomly assigned: i) to receive the telephone contact of the investigation team and was advised to ''beep''(short phone call not picked up) the investigators team in the case any medical incidence occurs within the 30 days following the immunization (intervention group) or; ii) to return to the health facility in case any medical incidence occurs within the same period (control group). The main outcome was AEFI incidence rate.
results236 parents were assigned to the intervention group and 235 to the control group. Of 1192 doses of EPI vaccines administered, 20 AEFIs (392 AEFIs/100000 doses/week) were reported within 30 days after vaccine administration. These included 19 (829 AEFIs/100000 doses/week) AEFIs in the intervention group and 1 (43 AEFIs/100000 doses/week) AEFI in the control group. The AEFIs reporting rate in the intervention group was significantly higher than that in the control group [RR = 18.9; CI95 (2.5; 140.0) (P=0.0004)].
conclusionThe use of telephone "beep" significantly increases at affordable cost community based AEFI reporting rate in routine EPI.
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