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Book (series)Climate Models Predict Persistent Above-Average Rains and Risk of Flooding in East Africa: FAO, OIE and WHO Warn Countries to Remain Vigilant about Rift Valley Fever
December 2014. Vol. 31
2014Also available in:
No results found.Rift Valley fever (RVF) is an arthropod-borne arboviral disease that predominantly affects ruminants and humans, causing major socio-economic implications. -
Brochure, flyer, fact-sheetReal-time monitoring and forecasting of Rift Valley fever in Africa 2019
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No results found.Rift Valley fever (RVF) is a vector-borne disease that severely impacts livelihoods, national and international markets, and human health. RVF is currently limited to Africa and parts of the Near East but has the recognized potential to expand globally. The disease in livestock is spread primarily by mosquitoes and the movement of animals. Clinical disease has been observed in sheep, goats, cattle, buffaloes, camels and humans. RVF is zoonotic. It can result in widespread febrile illness in humans, associated with severe and sometimes fatal sequelae in under one percent of cases. Outbreaks of RVF are closely associated with climate anomalies such as periods of heavy rains and prolonged flooding, which increase habitat suitability for vector populations, thus influencing the risk of disease emergence, transmission and spread. In this context, Early Warning Systems represent an essential tool providing information on occurring animal health hazards that might evolve into disasters unless early response is undertaken. To enable national authorities to implement measures preventing outbreaks, FAO developed the RVF Monitoring/Early Warning System. This tool has been crucial to successfully forecast hotspots for RVF vector amplification, providing recommendations and early warning messages for countries at risk of RVF outbreaks. -
Book (series)Rift Valley fever action framework 2022
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No results found.Rift Valley fever (RVF) is an arboviral disease affecting humans and livestock transmitted by mosquitoes. It is endemic to large areas of Africa, resulting in widespread abortion and neonatal mortality in livestock, and severe complications in a small but significant percentage of human cases. The range of RVF is largely determined by the distribution of suitable vector habitat and rainfall, which changes over time and as a result of climate change. In addition to which, the movement of animals and animal products for trade may lead to the spread of RVF to previously non-infected areas. This RVF Action Framework is intended to provide decision makers with guidance on the best course of action to take in response to an RVF outbreak or the risk of an outbreak, and help them develop a national action plan for this response. A coordinated One Health approach that brings together the public, animal and environmental health sectors is recommended, as is a risk-based approach that uses risk assessment and mapping to determine the appropriate measures to be taken and the locations where they are required. A country’s RVF response can be best broken down into the four phases of the epidemiological cycle: the inter-epidemic, pre-epidemic, epidemic and post-epidemic periods. Surveillance, risk assessment and capacity building, for instance, are key during the inter-epidemic period, while the focus during the post-epidemic period shifts to mitigating the disease’s impact.
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