[Relationship between indigenous microflora of posterior pharyngeal wall and pharyngitis]

To investigate the relationship between the abundance and density of the normal flora in the mucous membrane of posterior pharyngeal wall and pharyngitis.

A total of 410 samples of posterior pharyngeal wall were received from patients with acute and chronic pharyngitis and normal persons living in Hohhot Area, Inner Mongolia, from September 2000 to April 2001. Locational, qualitative, and quantitative analyses of the micro-flora were made.

There were 6-9 species of bacteria, belonging to 4-5 genuses, in normal persons' pharyngeal wall. alpha-hemolytic streptococcus, Neisseria, Corynebacterium, Staphylococcus, Streptococcus anaerobius, and fusiform bacillus accounted for 40%-60%, 20%-30%, 5%-10%, 4%-8%, and 0%-40% respectively of the cultured microorganisms. Hemophilus influenzae accounted for 65% of the pathogenic bacteria in acute pharyngitis. There is a close relationship between the succession of the invading organisms and indigenous micro-flora and the occurrence and development of acute pharyngitis.

The internal disorder of the proper microflora in the mucous membrane of posterior pharyngeal wall is a characteristic indicator of chronic inflammation of pharynx.