Impact of interventions and the incidence of Ebola virus disease in Liberia

Many HIFA members have emphasised the importance of community engagement, communication and healthcare information to contain epidemics such as Ebola. This paper in Health Policy and Planning confirms these observations. ‘Much of the decline in the epidemic curve was driven by critical behaviour changes within local communities, rather than by international efforts that came after the epidemic had turned.’

CITATION: Impact of interventions and the incidence of ebola virus disease in Liberia — implications for future epidemics
Thomas D Kirsch, Heidi Moseson, Moses Massaquoi, Tolbert G Nyenswah, Rachel Goodermote, Isabel Rodriguez-Barraquer, Justin Lessler, Derek Cumings, and David H Peters

Corresponding author:


To better understand the impact of national and global efforts to contain the Ebola virus disease epidemic of 2014–15 in Liberia, we provide a detailed timeline of the major interventions and relate them to the epidemic curve.

In addition to personal experience in the response, we systematically reviewed situation reports from the Liberian government, UN, CDC, WHO, UNICEF, IFRC, USAID, and local and international news reports to create the timeline. We extracted data on the timing and nature of activities and compared them to the timeline of the epidemic curve using the reproduction number—the estimate of the average number of new cases caused by a single case.

Interventions were organized around five major strategies, with the majority of resources directed to the creation of treatment beds. We conclude that no single intervention stopped the epidemic; rather, the interventions likely had reinforcing effects, and some were less likely than others to have made a major impact. We find that the epidemic’s turning coincided with a reorganization of the response in August–September 2014, the emergence of community leadership in control efforts, and changing beliefs and practices in the population. Ebola Treatment Units were important for Ebola treatment, but the vast majority of these treatment centre beds became available after the epidemic curve began declining. Similarly, the United Nations Mission for Ebola Emergency Response was launched after the epidemic curve had already turned.

These findings have significant policy implications for future epidemics and suggest that much of the decline in the epidemic curve was driven by critical behaviour changes within local communities, rather than by international efforts that came after the epidemic had turned. Future global interventions in epidemic response should focus on building community capabilities, strengthening local ownership, and dramatically reducing delays in the response.

– The epidemic curve began decreasing before most global efforts were in place, limiting their impact on stopping the epidemic’s spread.
– Future global interventions should focus on strengthening local leadership, individual and community behaviour change, along with better body management and burial.
– Early models of the Ebola outbreak in Liberia and the resulting global strategies highlighted less important interventions, notably the rapid building of ETUs, and proved inaccurate.

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