- Subjects resident in Emilia-Romagna and either registered with the AUSL of Reggio Emilia, Bologna, Modena and Parma or working in the province of Reggio Emilia, Bologna, Modena and Parma included in the target groups described in the Study Protocol vaccination with H1N1sw vaccine Focetria is recommended - according to the national pandemic plan adopted at the local level - will be eligible for enrolment.