ArticleOnline journal of public health informatics2014
Early-warning health and process indicators for sentinel surveillance in Madagascar 2007-2011.
Article in Online journal of public health informatics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial.BMC medicine · 2022Trial
- Identifying viral infections through metagenomic Next Generation Sequencing of undiagnosed respiratory fevers in Madagascar (2014-2019).BMC infectious diseases · 2026Article
- Challenges in strengthening sentinel surveillance network during COVID-19 pandemic in Africa.Scientific reports · 2026Article
- African countries from the Pasteur Network reexamine their syndromic sentinel surveillance system associated with household contact within the AFROSCREEN program.Frontiers in public health · 2023Article
- An Electronic Disease Early Warning System in Sana'a Governorate, Yemen: Evaluation Study.JMIR public health and surveillance · 2019Article
- Nonannual seasonality of influenza-like illness in a tropical urban setting.Influenza and other respiratory viruses · 2018Article
- Study on causes of fever in primary healthcare center uncovers pathogens of public health concern in Madagascar.PLoS neglected tropical diseases · 2018Article
- Spatial and temporal dynamics of malaria in Madagascar.Malaria journal · 2018Article
- Contemporary epidemiological overview of malaria in Madagascar: operational utility of reported routine case data for malaria control planning.Malaria journal · 2016Article
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12 authors.
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Abstract
backgroundEpidemics pose major threats in resource-poor countries, and surveillance tools for their early detection and response are often inadequate. In 2007, a sentinel surveillance system was established in Madagascar, with the aim of rapidly identifying potential epidemics of febrile or diarrhoeal syndromes and issuing alerts. We present the health and process indicators for the five years during which this system was constructed, showing the spatiotemporal trends, early-warning sign detection capability and process evaluation through timely analyses of high-quality data.
methodsThe Malagasy sentinel surveillance network is currently based on data for fever and diarrhoeal syndromes collected from 34 primary health centres and reported daily via the transmission of short messages from mobile telephones. Data are analysed daily at the Institut Pasteur de Madagascar to make it possible to issue alerts more rapidly, and integrated process indicators (timeliness, data quality) are used to monitor the system.
resultsFrom 2007 to 2011, 917,798 visits were reported. Febrile syndromes accounted for about 11% of visits annually, but the trends observed differed between years and sentinel sites. From 2007 to 2011, 21 epidemic alerts were confirmed. However, delays in data transmission were observed (88% transmitted within 24 hours in 2008; 67% in 2011) and the percentage of forms transmitted each week for validity control decreased from 99.9% in 2007 to 63.5% in 2011.
conclusionA sentinel surveillance scheme should take into account both epidemiological and process indicators. It must also be governed by the main purpose of the surveillance and by local factors, such as the motivation of healthcare workers and telecommunication infrastructure. Permanent evaluation indicators are required for regular improvement of the system.
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