Chikungunya Virus in North-Eastern Italy: A Seroprevalence Survey

AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE - Tập 82 Số 3 - Trang 508-511 - 2010
Maria Luisa Moro1, Carlo Gagliotti1, Giuliano Silvi1, Paola Angelini1, Vittorio Sambri1, Giovanni Rezza1, Erika Massimiliani1, A. Mattivi1, E. Grilli1, Alba Carola Finarelli1, Nadir Spataro1, Anna Pierro1, Thomas Seyler1, P Macini1
1Area Rischio Infettivo, Agenzia Sanitaria e Sociale Regione Emilia-Romagna; Dipartimento di Sanità Pubblica, Azienda USL Ravenna; Dipartimento di Ematologia, Oncologia e Microbiologia “L. e A. Seragnoli,” Università degli Studi di Bologna, Centro di Riferimento Regionale per le Emergenze Microbiologiche, CRREM, Azienda Ospedaliera, Universitaria S. Orsola, Malpighi, Bologna; Dipartimento di Malattie Infettive, Parassitarie ed Immunomediate, Istituto Superiore di Sanità; Servizio Sanità Pubblica...

Tóm tắt

After an outbreak of Chikungunya infection in Emilia-Romagna Region (North-eastern Italy), a survey was performed to estimate the seroprevalence of antibody to Chikungunya virus and the proportion of asymptomatic infections, to identify factors associated with infection, and evaluate the performance of the surveillance system. The method used was a survey on a random sample of residents of the village with the largest number of reported cases. The prevalence was 10.2% (33 of 325), being higher in older people and males, and lower when window screens and insect repellents were used. Only 18% of infected persons were fully asymptomatic, 85% of the 27 symptomatic confirmed cases satisfied the surveillance case definition, and 63% of the persons meeting the criteria for suspect case were identified by the active surveillance system. This study provides basic parameters for modeling the transmission potential of outbreaks and planning control measures for Chikungunya infection in temperate settings.

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