Re: Human cases of West Nile fever in Europe - 2013
First human infections of West Nile Fever this year in Russia
machinetranslation
On the incidence of dengue, West Nile
In the Astrakhan region formed and constantly maintains its natural focus of arbovirus activity infections - West Nile (WNV) and other mosquito fevers.
The share of the Astrakhan region in the 2012 season have 15.9% (72 ct.) Cases of WNV in the Russian Federation. Celebrated cases of WNV delivery of the Astrakhan region on the territory of the Moscow region.
In the 15 years since the activation of the natural focus of WNV in the Astrakhan region (1997 - 2012) recorded 480 cases, including 17 fatalities (3.5%).
In 2012, our region has been an increase in morbidity compared with 2011. 4 times.
The cases reported among residents: Astrakhan-39 ff., G.Znamensk-1 ct., The areas of: Enotaevsky - 1 ct., Liman, Ikryaninsky - 2 ct., Kharabalinsky - 5 ct., Volodarskij -3 seq. , Krasnoyarsk, Nariman, Kamyzyaksky - 4 ct., Volga-7 ff.
Registered 6 imported cases of WNV disease (Uzbekistan, Krasnodar region, Grozny, Volgograd region, Kazakhstan).
For the season 2012 is characterized by an early start and late finish epidemic season (the first cases in the first week of June and the last - in October). Among urban residents registered 55.6% of the total incidence. Of the 18% of urban residents infected while on holiday in the countryside.
The largest percentage of patients registered in the month of August, 51.4%.
Age of onset from 2 to 77 years.
Among children under the age of 14 years have registered 11 cases.
On 28.05.2013 2 registered laboratory-confirmed cases of West Nile fever, including 1 case of a child under the age of 5 years. Cases have been reported in Astrakhan and the Volga region.
The source of infection of West Nile virus in birds are naturally aquatic, riparian and complex foraging on the ground (pigeons, crows). Carriers of the virus are mosquitoes kind Kuleks.
Infection occurs only through the bite of a mosquito, when coupled with the saliva of the virus enters the human body.
Summary incidence coincides with the maximum number and highest infestation of the main types of mosquito vectors of WNV (July-September).
The reasons contributing to the emergence of West Nile fever diseases are favorable conditions for vector breeding pathogen fever, failure to combat mosquitoes in natural conditions and accommodation, activities and conduct of hydraulic arrangement of coastal recreational water areas, the population of active visiting natural areas.
WNV in humans occurs in the form of an acute febrile illness with symptoms of general intoxication, headaches, muscle pain, joint pain, rash, in severe cases - with the development of serous meningitis and meningoencephalitis (inflammation of the membranes of brain tissue). The incubation period ranges from 2 to 8 - 14 days to an average of 3 - 6 days.
The main preventive measures for the prevention of WNV disease are:
- Implementation of measures aimed at reducing the number of mosquitoes: carrying mosquito treatment areas adjacent to countryside recreation bases, basements of residential buildings;
- The elimination of all illegal dumps, timely, solid waste removal, mowing weeds;
- The protection of residential and public buildings from aerial mosquito by zasetchivaniya window and door openings;
- The elimination of the pits on the land, the grooves where standing water may occur hatching of mosquitoes;
- The use of personal protection against mosquitoes, use of repellent mosquitoes (repellents), indoor use fumigators.
http://30.rospotrebnadzor.ru/epidemiologic_situation/96930/
