Identification of Markers for Dengue Infection in Patients after Visiting Dengue-Endemic Countries


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In studied blood serum samples from Russian patients hospitalized with suspected dengue fever, one or more markers of dengue fever have been detected, namely, viral RNA, NS1 antigen, and IgM or IgG antibodies. Moreover, only the combined use of various immunological and genetic methods provided a more effective diagnosis of dengue fever. The detection of IgG to dengue virus in patients with high titers of IgG to tick-borne encephalitis virus (TBEV) and, conversely, the detection of IgG to TBEV virus in patients with high titers of IgG to dengue has been documented. The results confirm the literature data on pronounced antigenic cross-sections between different representatives of flaviviruses, which may complicate the ELISA diagnosis of TBEV and dengue in patients. Genotyping of obtained dengue virus isolates showed that imported cases of dengue fever are caused by subtypes 1–4 of the dengue virus, with the prevalence of infection cases caused by dengue virus 1. Sequencing of these dengue virus isolates, including genome-wide, showed that viral isolates obtained on the territory of Russia are phylogenetically close to modern variants of the dengue virus circulating in the countries of Southeast Asia.

Sobre autores

V. Ternovoi

State Research Center of Virology and Biotechnology VECTOR

Autor responsável pela correspondência
Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

I. Plyasunova

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

A. Sementsova

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

M. Kartashov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

A. Shvalov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

E. Chausov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

L. Eremeeva

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

E. Protopopova

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

E. Chub

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

R. Bayandin

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

O. Pyankov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

V. Loktev

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

A. Agafonov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

R. Maksyutov

State Research Center of Virology and Biotechnology VECTOR

Email: tern@vector.nsc.ru
Rússia, Novosibirsk oblast, 630559

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