. There are also several kinds of respiratory disease that are mostly related with specific viruses, for example; rhinovirus are viruses associated with common cold. Whereas some of these diseases occupy characteristic epidemiologic niches. For example; some military recruits suffer from adenovirus infections.
It is possible that a lot of respiratory viruses have the ability to cause more than one kind of respiratory disease and also, multiple kinds of respiratory diseases can be found in the same exact patient. Furthermore, the clinical disease initiated by respiratory viruses are rarely sufficiently characteristic to allow an etiologic diagnosis on clinical grounds alone , although the epidemiologic setting increases the possibility that one category of viruses rather than another is involved. In general, laboratory methods must be relied on to establish a specific viral diagnosis.