Detection of the Asian II genotype of dengue virus serotype 2 in humans and mosquitoes in Brazil

Kubiszeski, Janaina Rigotti; Vieira, Carla Julia da Silva Pessoa; Thies, Sirlei Franck; Silva, David José Ferreira da; Barreto, Eriana Serpa; Mondini, Adriano; Bronzoni, Roberta Vieria de Morais

doi:10.1590/0037-8682-0439-2019

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Short Communication • Rev. Soc. Bras. Med. Trop. 53 • 2020 • https://doi.org/10.1590/0037-8682-0439-2019 copy

Detection of the Asian II genotype of dengue virus serotype 2 in humans and mosquitoes in Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

INTRODUCTION:

DENV-2 is the cause of most dengue epidemics worldwide and is associated with severe cases.

METHODS:

We investigated arboviruses in 164 serum samples collected from patients presenting with clinical symptoms of dengue fever and 152 mosquito pools.

RESULTS:

We detected the Asian II genotype of DENV-2 in humans and mosquitoes. Our results confirmed the circulation of the Asian II genotype in Brazil, in addition to the prevalent Asian/American genotype.

CONCLUSIONS:

The detection of Asian II genotype of DENV-2 in mosquito pools collected in a forest park may be related to a spillback event of human dengue virus.

Keywords:
Molecular epidemiology; Arbovirus; Phylogeny

Species	May	June	July	August	September	October	Total
Aedeomyia (Ady.) squamipennis	3 (F)	2 (F)	23 (F);	28 (F);			90
			14 (M)	20 (M)
Aedes (Stg.) aegypti	1 (M)		2 (M)			2 (F);	7
						2 (M)
Coquillettidia (Rhy.) arribalzagae	2 (F)						2
Culex (Cux.) coronator	14 (F);	34 (F);	3 (F)			3 (F);	66
	8 (M)	2 (M)				2 (M)
Cx. (Cux.) declarator	4 (F);	13 (F)	5 (F)	11 (F);	64 (F);	20 (F)	124
	1 (M)			3 (M)	3 (M)
Cx. (Cux.) nigripalpus	1 (F)	3 (F)	1 (M)	5 (F)	5 (F);		17
					2 (M)
Cx. (Cux.) quinquefasciatus	66 (F);	6 (F);	15 (F);	66 (F);	13 (F);	8 (F)	261
	5 (M)	5 (M)	17 (M)	41 (M)	19 (M)
Cx. (Cux.) saltanenses			13 (F)	8 (F);	8 (F)	11 (F)	41
				1 (M)
Cx. (Mel.) sp		9 (F)	12 (F)	15 (F);	65 (F);	12 (F);	125
				1 (M)	5 (M)	6 (M)
Haemagogus (Hag.) tropicalis						1 (F)	1
Ochlerotatus (Och.) scapularis		1 (F)	3 (F)	1 (F)	15 (F)	6 (F)	26
Psorophora (Gra.) dimidiata	1 (F)		1 (F)				2
Uranotaenia (Ura.) ditaenionota					1 (F)	4 (F);	6
						1 (M)
Ur. (Ura.) geometrica		1 (F)	2 (F)	1 (F)	1 (F);	1 (F);	10
					3 (M)	1 (M)
Total	106	76	111	201	204	80	778

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[1] Corresponding author: Dra. Roberta Vieira de Morais Bronzoni. e-mail:rbronzoni@ufmt.br