Dataset Information

Tracking Rift Valley fever: From Mali to Europe and other countries, 2016.

ABSTRACT: On 16 September 2016, the World Health Organization confirmed a Rift Valley fever (RVF) outbreak in Niger. Epidemiological surveillance was reinforced among the French Armed Forces deployed in Niger and bordering countries: Chad, Mali and Burkina Faso. On 26 October, a probable case of RVF was reported in a service member sampled in Mali 3 weeks earlier. At the time the result was reported, the patient was on vacation on Martinique. An epidemiological investigation was conducted to confirm this case and identify other cases. Finally, the case was not confirmed, but three suspected cases of RVF were confirmed using serological and molecular testing. RVF viral RNA was detectable in whole blood for 57 and 67 days after onset of symptoms for two cases, although it was absent from plasma and serum. At the time of diagnosis, these cases had already returned from Mali to Europe. The infectivity of other arboviruses in whole blood has already been highlighted. That RVF virus has been detected in whole blood that long after the onset of symptoms (67 days) raises the question of its potential prolonged infectivity. Because of exposure to tropical infectious diseases during deployment, military populations could import emerging pathogens to Europe.

SUBMITTER: Tong C

PROVIDER: S-EPMC6446957 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Tracking Rift Valley fever: From Mali to Europe and other countries, 2016.

Tong Christelle C Javelle Emilie E Grard Gilda G Dia Aissata A Lacrosse Constance C Fourié Toscane T Gravier Patrick P Watier-Grillot Stéphanie S Lancelot Renaud R Letourneur Franck F Comby Frédéric F Grau Martin M Cassou Lionel L Meynard Jean-Baptiste JB Briolant Sébastien S Leparc-Goffart Isabelle I Pommier de Santi Vincent V

Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin 20190201 8

On 16 September 2016, the World Health Organization confirmed a Rift Valley fever (RVF) outbreak in Niger. Epidemiological surveillance was reinforced among the French Armed Forces deployed in Niger and bordering countries: Chad, Mali and Burkina Faso. On 26 October, a probable case of RVF was reported in a service member sampled in Mali 3 weeks earlier. At the time the result was reported, the patient was on vacation on Martinique. An epidemiological investigation was conducted to confirm this ...[more]

PMID: 30808441

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Project description:Abstract Rift Valley fever (RVF) is a vector?borne disease transmitted by a broad spectrum of mosquito species, especially Aedes and Culex genus, to animals (domestic and wild ruminants and camels) and humans. Rift Valley fever is endemic in sub?Saharan Africa and in the Arabian Peninsula, with periodic epidemics characterised by 5–15 years of inter?epizootic periods. In the last two decades, RVF was notified in new African regions (e.g. Sahel), RVF epidemics occurred more frequently and low?level enzootic virus circulation has been demonstrated in livestock in various areas. Recent outbreaks in a French overseas department and some seropositive cases detected in Turkey, Tunisia and Libya raised the attention of the EU for a possible incursion into neighbouring countries. The movement of live animals is the most important pathway for RVF spread from the African endemic areas to North Africa and the Middle East. The movement of infected animals and infected vectors when shipped by flights, containers or road transport is considered as other plausible pathways of introduction into Europe. The overall risk of introduction of RVF into EU through the movement of infected animals is very low in all the EU regions and in all MSs (less than one epidemic every 500 years), given the strict EU animal import policy. The same level of risk of introduction in all the EU regions was estimated also considering the movement of infected vectors, with the highest level for Belgium, Greece, Malta, the Netherlands (one epidemic every 228–700 years), mainly linked to the number of connections by air and sea transports with African RVF infected countries. Although the EU territory does not seem to be directly exposed to an imminent risk of RVFV introduction, the risk of further spread into countries neighbouring the EU and the risks of possible introduction of infected vectors, suggest that EU authorities need to strengthen their surveillance and response capacities, as well as the collaboration with North African and Middle Eastern countries.

Dataset Information

Tracking Rift Valley fever: From Mali to Europe and other countries, 2016.

Publications

Tracking Rift Valley fever: From Mali to Europe and other countries, 2016.

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