Genetic Structure of () Populations in Russia.

Background: () was found for the first time in 2011 on the Black Sea coast in Russia, and during 2011-2019, the species expanded over two climate zones Cfa and Csa.

Methods: Here, we studied the sequence diversity of the mitochondrial cytochrome c oxidase I () gene, 1317-1433bp in length. In total, 131 specimens of sampled from 21 locations in Russia and Abkhazia were examined.

Development and Validation of a Protein Array for Detection of Antibodies against the Tick-Borne Pathogen Borrelia miyamotoi.

Current serological tests for the emerging tick-borne pathogen Borrelia miyamotoi lack diagnostic accuracy. To improve serodiagnosis, we investigated a protein array simultaneously screening for IgM and IgG reactivity against multiple recombinant B. miyamotoi antigens.

Autochthonous Case of Rickettsia slovaca Infection in Russia.

We describe an autochthonous case of Rickettsia slovaca infection in a man 35 years of age from Russia who had tickborne lymphadenopathy. We used ELISA and quantitative PCR testing to further identify DNA and confirm diagnosis. Physicians in Russia should consider similar diseases in differential diagnoses after tick bites.

Severe babesiosis caused by Babesia divergens in a host with intact spleen, Russia, 2018.

We report a case of severe babesiosis caused by the bovine pathogen Babesia divergens with the development of multisystem failure in a splenic host. Immunosuppression other than splenectomy can also predispose people to B. divergens.

Two Cases of Dengue Fever Imported from Egypt to Russia, 2017.

In 2017, two cases of dengue fever were imported from Hurghada, Egypt, where dengue fever was not considered endemic, to Moscow. These cases show how emergence of dengue fever in popular resort regions on the coast of the Red Sea can spread infection to countries where it is not endemic.

Comparative analysis of the circadian rhythm genes and in Linnaeus, 1758 (Diptera, Culicidae).

Nucleotide sequences of the circadian rhythm genes, and , were studied for the first time in mosquitoes Linnaeus, 1758. In this work we evaluated variations of the studied genome fragments for the two forms of (forma "pipiens" - mosquitoes common for aboveground habitats, forma "molestus" - underground mosquitoes). We compared from Russia with transatlantic and subtropical Say, 1823.

Co-infection of dengue fever and hepatitis A in a Russian traveler.

We report a hepatitis A (HAV) and dengue virus (DENV) co-infection in Russian man who had been traveling to Dominican Republic. At admission to the hospital hemorrhagic and jaundice symptoms were observed in patient. PCR tests of blood serum and urine revealed RNA dengue virus type 3, HAV RNA, anti-HAV-IgM.

Complete Genome Sequences of Four European Subtype Strains of Tick-Borne Encephalitis Virus from Eastern Siberia, Russia.

Three tick-borne encephalitis virus (TBEV) strains were isolated from Ixodes persulcatus ticks, and one was isolated from a shrew in the territory of eastern Siberia (Russia). The level of sequence identity compared to Neudoerfl (the European prototype strain) is 97.2 to 97.

Humans infected with relapsing fever spirochete Borrelia miyamotoi, Russia.

Borrelia miyamotoi is distantly related to B. burgdorferi and transmitted by the same hard-body tick species. We report 46 cases of B.

Epidemiology of West Nile infection in Volgograd, Russia, in relation to climate change and mosquito (Diptera: Culicidae) bionomics.

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.