In 1999, there was the large outbreak of West Nile fever (WNF) in Southern Russia (>500 cases in the Volgograd Province). In 2000-2004, the WNF incidence rate decreased steadily to zero, but a new outbreak occurred in 2007 (64 cases). The analysis of historical climate data for Volgograd from 1900 to present showed that the years 1999 and 2007 were the hottest ones due to a very mild "winter" (Dec.-Mar.) and a hot "summer" (June-Sep.). There are up to 15 potential WNF vectors in Volgograd, but only Culex pipiens and Culex modestus are abundant in late summer, both in urban and rural settings. Only these species are naturally attracted to and feed on both humans and birds. The RNA of pathogenic WN virus genovariant was found by reverse transcriptase polymerase chain reaction only in Culex mosquitoes at the infection rate of about 0.04%. So these species may be considered as potential WNF "bridge vectors" between birds and humans as well as main vectors in sylvatic avain cycle. Their abundance in an epidemic season was higher in the years with a mild winter and a hot summer, so this phenomenon may serve as a connecting link between a climate and WNF epidemiology. These findings give some hints on the predisposing factors for WNF epidemic as well as the possibility to predict WNF outbreaks in the temperate climate zones.

In 2018, a previously unknown Ebola virus, Bombali virus, was discovered in Sierra Leone. We describe detection of Bombali virus in Guinea. We found viral RNA in internal organs of 3 Angolan free-tailed bats ( Mops condylurus ) trapped in the city of N’Zerekore and in a nearby village.

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Objective of the study was to investigate the current borders of the invasive species Ae. aegypti and Ae. albopictus distribution in the south of the Krasnodar Region and climatic factors limiting their expansion. Material and methods. Mosquito larvae, pupa and imago were collected in 21 inhabited localities in August–September, 2017, using conventional entomological methods, and identified through standard morphological keys. Climatic data found on the website pogoda. ru were analyzed using SPSS program. Results and conclusions. Ae. albopictus is widely spread along the Black Sea coast, from Adler to Novorossiysk (Ozereyevka), as well as on the north slopes of Caucasus up to Maikop. Additional investigations are required to specify the northern border of species distribution and to evidence the existence of established populations here. Ae. aegypti were not found in the south of the Krasnodar Region. The obtained data suggest a possibility of much wider spreading of dengue, Chikungunya and Zika fevers in case of pathogen importation to the south of Krasnodar Region, than was assumed earlier.

В начале февраля 2016 г. острая инфекция, вызванная вирусом Зика, выявлена у российского туриста, вернувшегося из Доминиканской республики. РНК вируса обнаружена методом ПЦР в плазме крови, моче и слюне на 8-й день заболевания, в последующие пять дней-только в моче. Клинические симптомы включали повышение температуры до 38°С, головные боли, артралгию, диарею, обильную мелкую пятнисто-папулезную сыпь на коже лица, туловища и конечностей, инъецированность склер, увеличение шейных лимфоузлов. Для образца вирусной РНК, выделенный из мочи больной, была определена нуклеотидная последовательность участка генома, кодирующего белки NS2a и NS2b. В результате доказана принадлежность данного выделенного вируса Зика к азиатской линии, вызвавшей текущую вспышку лихорадки Зика в Америке.

Aedes albopictus, впервые обнаруженный на территории Сочи в 2011 г, в настоящее время распространился широко по территории Краснодарского края. Целью работы было определение границ ареала вида в 2019 г. Сбор личинок и имаго проводили на кладбищах, которые являются основными доступными биотопами для подобного рода исследований. Граница ареала Ae. albopictus проходила через ст. Юровка-Славянск-на Кубани-Тимашевск-Кореновск-ст. Восточная. Анализ погодных условий за период 2017-2019 г свидетельствует о ежегодном повышении январских температур и отсутствии в 2019 г длительных периодов похолодания, что позволяет прогнозировать дальнейшее распространение комаров в северном направлении. Ключевые слова: Aedes albopictus, распространение, Краснодарский край. Aedes albopictus was recorded for the first time in Sochi in 2011 and during the following years, the mosquito widespread across the Krasnodar Kray. The aim of our work was to monitor the range of Ae. albopictus in Krasnodar Kray in 2019. Mosquito larvae and imago were sampled in cemeteries that are the only available habitats for such researches. The range border passed through v.Yurovka-Slavyansk-on-Kuban-Timashevsk-Korenovsk-v. Eastern. The increasing of January temperatures during the period 2017-2019 and the lack of periods of cooling in January 2019 suggest the further spreading of Ae. albopictus to the north..

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