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Artigo Original • Epidemiol. Serv. Saúde 25 (4) • Oct-Dec 2016 • https://doi.org/10.5123/S1679-49742016000400007   copy

Incidence of dengue cases (2007-2013) and seasonal distribution of mosquitoes (Diptera: Culicidae) (2012-2013) in Barreiras, Bahia, Brazil* * This article resulted from Isabelle Matos Master's thesis, presented to the Post-graduate program in Environmental Sciences of the Universidade Federal do Oeste da Bahia, in 2014. The study had the financial support of the Foundation of Support for Research of the State of Bahia (Fapesb): Protocol No. PPP0072/2010.

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Abstract

OBJECTIVE:

to describe seasonal mosquito distribution and the incidence of dengue cases in Barreiras, Bahia, Brazil.

METHODS:

this is a descriptive study using primary data on mosquito distribution in ovitraps from April 2012 to March 2013, as well as secondary data from the Notifiable Diseases Information System, Epidemiological Surveillance and the Zoonosis Control Center about dengue cases and Aedes aegypti infestation rates from January 2007 to March 2013.

RESULTS:

16,512 mosquito specimens were collected, 62.0% were Culex quinquefasciatus (most frequent in the dry season) and 38.0% were Aedes aegypti (most frequent in the rainy season); 8,373 dengue cases were recorded, with highest incidence per 100,000 inhabitants in 2009 (n=704.5), 2011 (n=429.3) and 2013 (n=247.2), between January and June.

CONCLUSION:

Culex quinquefasciatus and Aedes aegypti occurred in all months; dengue incidence was higher in the rainy season and in alternating years.

Key words:
Culicidae; Aedes; Dengue; Epidemiology, Descriptive

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