Vigilancia y control de las infecciones originadas por gérmenes oportu- nistas: aspergilosis Surveillance and control of infections caused by opportunist germs: aspergillosis

Infections by opportunist germs, whose natural habitat is the environment, have acquired greater relevance in the last two decades. Nonetheless, and as happens with infections caused by Aspergillis spp, their diagnosis is very difficult and on occasion can only be confirmed by histological and/or anatomopathological findings. From an epidemiological point of view, it can on occasion be problematical to determine with certainty whether the origin of the infection is a community or nosocomial one.