Autochthonous chikungunya virus transmission may have occurred in Bologna, Italy, during the summer 2007 outbreak Seyler, T and Rizzo, C and Finarelli, A C and Po, C and Alessio, P and Sambri, V and Ciofi Degli Atti, M L and Salmaso, S, Eurosurveillance, 13, 8015 (2008), https://doi.org/10.2807/ese.13.03.08015-en