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Arbovirus investigation in patients from Mato Grosso during Zika and Chikungunya virus introdution in Brazil, 2015-2016.

Abstract：

:Arboviruses have become a major public health concern in Brazil, especially after Zika virus (ZIKV) and Chikungunya virus (CHIKV) introduction, leading to massive epidemics. We conducted an investigation of arboviruses in patients with acute febrile illness for less than five days in Mato Grosso state (MT) during the period of ZIKV and CHIKV dissemination in Brazil. To achieve that, 453 human serum samples of patients suspected of Dengue (DENV), Yellow Fever (YFV), ZIKV or CHIKV collected in health units of 31 cities of MT were subjected to RT-PCR protocols for 10 flaviviruses, 5 alphaviruses and orthobunyaviruses from Simbu serogroup, nucleotide sequencing and viral isolation. Regarding flaviviruses, five (1.1%) patients were infected with DENV-1 genotype V, 22 (4.4%) with DENV-4 genotype II, 3 (0.7%) with YFV South American genotype II and five (1.1%) with ZIKV Asian genotype. The first human case of ZIKV in MT was detected in this study during August, 2015 in Tapurah. Alphaviruses were detected in 2 (0.4%) patients infected with CHIKV genotype ECSA, 1 (0.2%) with Madariaga (EEEV) lineage III and 34 (7.5%) with Mayaro (MAYV) genotype L. Four (11.4%) patients presented dual infections with DENV-1/ZIKV, DENV-1/DENV4, DENV-4/MAYV and ZIKV/MAYV. The majority - 13/34 positive for MAYV, one for Madariaga virus - are residents in Várzea Grande (VG), metropolitan region of Cuiabá, capital of MT. The first CHIKV infection in MT was detected in this study in Mirassol D'Oeste, during July, 2015. In addition, 20 (4.4%) patients were positive for OROV Segment S genotype IA. These results reinforce the variation in arboviruses frequency and distribution during outbreaks, highlinghing the importance of differential diagnosis to identify agents silently co-circulating with major health problem arboviruses.

journal_name

Acta Trop

journal_title

Acta tropica

authors

de Souza Costa MC,Siqueira Maia LM,Costa de Souza V,Gonzaga AM,Correa de Azevedo V,Ramos Martins L,Chavez Pavoni JH,Gomes Naveca F,Dezengrini Slhessarenko R

doi

10.1016/j.actatropica.2018.12.019

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

395-402

eissn

0001-706X

issn

1873-6254

pii

S0001-706X(18)30601-6

journal_volume

190

pub_type

杂志文章

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