Abstract
In patients with recurrent tonsillitis, the detection rates for Bacteroides spp. as well as for Prevotella spp. and Porphyromonas spp. (which are included among the genus Bacteroides spp. in the old classification) were significantly higher in patients aged 13 years or older than in the patients aged 12 years or younger (P<0.01).
Bacteroides spp. and Porphyromonas gingivalis were only detected in patients with recurrent tonsillitis. In addition, the detection rate of Peptostreptococcus spp. was significantly higher in patients with recurrent tonsillitis.