No estoy segura si esto se traduce como "enfermedad pseudogripal" o como "enfermedad similar a la gripe"; encontré que la primera definición se refiere más bien a una enfermedad causada por el virus del nilo occidental; algo distinto de lo que busco, que está relacionado con la enfermedad causada con el virus de la influenza. En inglés ILI (influenza-like illness) se define así:
ILI is a nonspecific respiratory illness characterized by fever, fatigue, cough, and other symptoms. The majority of ILI cases is not caused by influenza but by other viruses (e.g., rhinoviruses and respiratory syncytial virus [RSV]), adenoviruses, and parainfluenza viruses). Less common causes of ILI include bacteria such as Legionella spp., Chlamydia pneumoniae, Mycoplasma pneumoniae, and Streptococcus pneumoniae. Influenza, RSV, and certain bacterial infections are particularly important causes of ILI because these infections can lead to serious complications requiring hospitalization (2--4). Yearly, adults and children can average one to three and three to six ILI, respectively (5).
Gracias por su ayuda!!