ENDescription
Old meaning: A severe form of catarrh that occurs epidemically. Modern meaning: A respiratory tract infection by an influenza virus from a family of negative-sense RNA viruses that includes seven genera.
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Influenza". If the same subject occurs on a page with "Influenza" more than once, it appears closer to "Influenza" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.