The development of a " cold - like illness " ( CLI ) usually requires infection with an upper respiratory virus such as rhinovirus , influenza virus , respiratory syncytial virus , parainfluenza virus , coronavirus or adenovirus , among others , and the development of sufficient signs , symptoms and pathophysiologies
A viral upper respiratory tract infection ( vURTI ) in the absence of overt illness ( subclinical vURTI ) will not be made manifest to the individual or to observers
The development of a " cold - like illness " ( CLI ) usually requires infection with an upper respiratory virus such as rhinovirus , influenza virus , respiratory syncytial virus , parainfluenza virus , coronavirus or adenovirus , among others , and the development of sufficient signs , symptoms and pathophysiologies to qualify as being ill based on personal and cultural definitions .
A viral upper respiratory tract infection ( vURTI ) in the absence of overt illness ( subclinical vURTI ) will not be made manifest to the individual or to observers and , therefore , will not be diagnosed as a CLI .