† The frequency of unspecified upper respiratory tract illness as a manifestation of M. pneumoniae infection, when compared with other manifestations resulting from infection with this agent, varies considerably among studies. Feizi185 studied patients from a country practice in England and noted ...
COMMON COLD AND UNSPECIFIED UPPER RESPIRATORY ILLNESS. By strict definition (significant nasal symptoms, no pharyngitis, and minimal fever), M. pneumoniae rarely causes the common cold. However, mild upper respiratory illness is noted frequently as the only manifestation of M. pneumoniae infection in...