A first case of the “West Nile” virus identified in France, the cases of chikungunya imported from the meeting in decline

This virus is transported by birds and transmitted to humans by mosquitoes of the genus “Culex”, a species distinct from the tiger mosquito.

If the majority of cases are asymptomatic, 20 % of infected people present a pseudo-grippal syndrome. However, Neurological complications occur in less than 1 % of cases, especially in immunocompromised or elderly people, and can even lead to death.

Case of cases of chikungunya – First case "west nile" virus

The health agency also continues to observe a decline in cases of chikungunya from the meeting. Furthermore, the Indian ocean, but judges that their level promotes indigenous transmissions in France.

As of July 29. 14 homes of Aboriginal transmission from Chikungunya, the virus of which is transmitted via tiger mosquito bites and caused high fevers as well as muscle pain, were identified in mainland France, for a total of 49 Aboriginal cases, according to a weekly report first case “west nile” virus by the public health agency published on Wednesday.

This “number of transmission foci illustrates the significant risk of indigenous transmission of these viruses in France. ” she said, repeating that “other cases will probably be identified, including outside the usual transmission areas”. Additionally, “Despite a drop in the number of cases imported from Chikungunya. notably from Reunion and the Indian Ocean, their level contributes to the appearance of indigenous transmissions in France,” said SPF. Thus the strain of the virus circulating in Reunion, “well suited to the Aedes Albopictus mosquito, facilitates this transmission”.

Between May 1. the start of reinforced surveillance, and July 29, 867 cases of Chikungunya, 659 cases of dengue and 3 cases of Zika, all imported, were identified. Active between the months of May and November, the tiger mosquito is located in 81 departments.