Health burden and economic costs of vector-borne diseases in Italy: the AUSL Romagna case

Abstract Introduction Vector-borne diseases (VBDs) are a serious threat for global health, representing around 17% of communicable diseases and more than 700.000 deaths every year. In Europe, and especially in Italy, this is a subject of growing concern, due to the increase of VBDs outbreaks that need vector control plans. Objectives Evaluate the 2013-2022 trend of VBD outbreaks within the AUSL Romagna area (provinces of Ravenna, Rimini, and Forlì-Cesena, in Emilia-Romagna Region, Italy) and the economic impact caused by hospitalizations and local prevention/disinfestation treatments. Methods We used aggregated and anonymized data from 3 informative systems: communicable disease system (SMI) for VBD prevalence; hospital discharge records (SDO) for hospitalizations, with a contribution of the VBD-related Diagnosis Related Groups (DRG); municipality records regarding the cost of dedicated interventions for vector prevention and disinfestation, communicated to the Emilia-Romagna Region. Results For the area of interest, 479 cases of VBDs were notified from 2013 to 2022, with a slight increasing trend over the years. Through hospital SDOs, 252 cases were identified with a diagnosis of VBD, plus 283 with a VBD-related DRG, with a total expenditure of €9.587.777. The distribution was not uniform between the provinces, Ravenna having the highest expense. The municipality records highlighted expenses for €95.443 for prevention and control interventions against mosquitoes, with a very variable trend over the period considered. Forlì had the highest expense. Conclusions VBDs show a highly variable trend and distribution during time, also in relatively small, sub-regional areas. The Emilia-Romagna regional plan against arboviruses, annually updated, can contribute to reduce this specific health and economic burden, lowering transmission among the population and resulting hospital pressure, thanks to prevention and timely interventions. Key messages • The use of information systems enables monitoring of the impact of arboviruses, as well as the related cost for hospital care and local treatments. • Putting in place an effective and updated plan against arboviruses, like the Emilia-Romagna Region one, helps managing VBDs and mitigating economic costs.