ABSTRACT
This paper summarizes the Emilia-Romagna strategy to face the 2007 emergency, caused by a Chikungunya epidemic outbreak with local virus transmission by Ae. albopictus. The paper describes the trend of epidemic and the interventions adopted to face toward the event. The first cases were in Ravenna and Cervia and then the outbreak spread toward other areas: the Provinces of Forlì-Cesena, Rimini and Bologna. Last case was notified 2007 28th September; Health Ministry declared over the outbreak on 2007 20th November. Emilia-Romagna Region did not consider over the trouble and prepared a Plan for the fight against the asian tiger mosquito and the prevention of Chikungunya and Dengue fever for 2008, activating an health surveillance system and optimizing the entomological control of the territory.
Subject(s)
Alphavirus Infections/epidemiology , Chikungunya virus , Disease Outbreaks , Alphavirus Infections/prevention & control , Humans , ItalySubject(s)
Air Pollution/adverse effects , Respiratory Tract Neoplasms/etiology , Air Pollution/statistics & numerical data , Case-Control Studies , Environmental Exposure , Female , Humans , Industry/statistics & numerical data , Italy , Life Style , Residence Characteristics , Respiratory Tract Neoplasms/mortality , Retrospective Studies , Smoking/epidemiology , Surveys and Questionnaires , Tobacco Smoke Pollution/statistics & numerical data , Urban Health/statistics & numerical data , Vehicle EmissionsABSTRACT
The Chikungunya virus infection zones have now quickly spread from Africa to parts of Asia, North America and Europe. Originally thought to trigger a disease of only mild symptoms, recently Chikungunya virus caused large-scale fatalities and widespread economic loss that was linked to recent virus genetic mutation and evolution. Due to the paucity of information on Chikungunya immunological progression, we investigated the serum levels of 13 cytokines/chemokines during the acute phase of Chikungunya disease and 6- and 12-month post-infection follow-up from patients of the Italian outbreak. We found that CXCL9/MIG, CCL2/MCP-1, IL-6 and CXCL10/IP-10 were significantly raised in the acute phase compared to follow-up samples. Furthermore, IL-1ß, TNF-α, Il-12, IL-10, IFN-γ and IL-5 had low initial acute phase levels that significantly increased at later time points. Analysis of symptom severity showed association with CXCL9/MIG, CXCL10/IP-10 and IgG levels. These data give insight into Chikungunya disease establishment and subsequent convalescence, which is imperative to the treatment and containment of this quickly evolving and frequently re-emerging disease.
Subject(s)
Alphavirus Infections/epidemiology , Alphavirus Infections/pathology , Chikungunya virus/immunology , Chikungunya virus/pathogenicity , Cytokines/blood , Disease Outbreaks , Alphavirus Infections/immunology , Follow-Up Studies , Humans , Italy/epidemiology , Serum/chemistryABSTRACT
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.