Autor(es): Valerio Lluís, Roure Sílvia, Fernández-Rivas Gema, Ballesteros Angel-Luis, Ruiz Jessica, Moreno Nemesio, Bocanegra Cristina, Sabrià Miquel, Pérez-Quilez Olga, de Ory Fernando, Molina Israel

Resumo: The invasive mosquito Aedes albopictus, with proven vectorial ability to transmit European autochthonous cycles of dengue - chikungunya virus, has currently colonized every coastal department of Eastern Spain. The main objective of the study was to define the epidemiological - clinical characteristics as well as the trends of these two arboviral diseases in a European area heavily colonized by Ae. albopictus. A voluntarily-based, prospective - multicenter surveillance study was performed in all medical units of the North Metropolitan area of Barcelona (406,000 inhabitants, Catalonia; Spain) with diagnostic capability from 2009 to 2013. Since any possible increase in arboviral cases could be justified by changes in traveling behaviors along the study period (especially longer trips) the trend showed by these two arboviral diseases was compared with that displayed by malaria cases during the same period. 38 out of 52 (73.1%) suspected cases could be serologically confirmed (IgM+): dengue 34/38 (89.5%) - chikungunya 4/38 (11.5%). No autochthonous cases were identified. The overall incidence of both arboviruses was 0.19 cases/10,000 inhabitants-year (95% CI: 0.07-0.3); dengue = 0.17 cases/10,000 inhabitants-year (95% CI: 0.05-0.3), - chikungunya = 0.02 cases/10,000 inhabitants-year (95% CI: 0.001-0.03). The Incidence Relative Risk of arboviral disease between 2009 - 2013 shown a significant trend (IRR = 1.27. IC 95%: 1.01-1.59; p = 0.043) when compared with that displayed by malaria (IRR = 1.04. IC 95%: 0.924-1.192). If no unexpected circumstances concur, the arboviral disease incidence tax would equal that of malaria about 2021-2022. The incidence of dengue - chikungunya is steadily increasing in the North Metropolitan area of Barcelona, a region densely colonized by Ae. albopictus, at the entire expense of imported cases (especially Visiting Friends - Relatives travelers). To date, no secondary autochthonous cases have been identified -, thus, they have not taken part in this rise.

Palavras-Chave: Arboviral diseases; Chikungunya; Dengue; Europe; Spain

Imprenta: Travel Medicine and Infectious Disease, v. 13, n. 5, p. 415-421, 2015

Identificador do Objeto Digital: 10.1016/j.tmaid.2015.06.008

Descritores: Chikungunya virus - Arbovirus ; Chikungunya virus - Infectious diseases ; Chikungunya virus - Viral infections ; Chikungunya Virus - Virus ; Chikungunya virus - Dengue ; Chikungunya virus - Epidemiology

Data de Publicação: 2015