Evidence of Bacterial Biofilms among Infected and Hypertrophied Tonsils in Correlation with the Microbiology, Histopathology, and Clinical Symptoms of Tonsillar Diseases

Table 2

Distribution of bacterial isolates among tonsillar specimens.

Gram-positive isolates	Tonsillar biopsy (core) no. (%)	Tonsillar swab (surface) no. (%)	Total no. (%)
Staphylococcus aureus	85 (18.31%)	99 (21.33%)	184 (39.65%)
Streptococcus agalactiae	36 (7.75%)	20 (4.31%)	56 (12.06%)
Group G streptococci	11 (2.37%)	14 (3.01%)	25 (5.38%)
Streptococcus pyogenes	6 (1.29%)	8 (1.72%)	14 (3.01%)
Group F streptococci	5 (1.07%)	6 (1.29%)	11 (2.37%)
Group C streptococci	4 (0.86%)	4 (0.86%)	8 (1.72%)
Streptococcus pneumoniae	1 (0.21%)	2 (0.43%)	3 (0.64%)
Methicillin resistant S. aureus	0	1 (0.21%)	1 (0.21%)
Subtotal	148 (31.89%)	154 (33.18%)	302 (65.08%)
Gram-negative isolates	Tonsillar biopsy (core) no. (%)	Tonsillar swab (surface) no. (%)	Total no. (%)
Haemophilus influenzae	44 (9.48%)	42 (9.05%)	86 (18.53%)
Haemophilus parainfluenzae	10 (2.15%)	21 (4.52%)	31 (6.68%)
Klebsiella pneumoniae	15 (3.23%)	15 (3.23%)	30 (6.46%)
Pseudomonas aeruginosa	5 (1.07%)	4 (0.86%)	9 (1.93%)
Citrobacter sp.	2 (0.43%)	2 (0.43%)	4 (0.86%)
Acinetobacter baumannii	1 (0.21%)	0	1 (0.21%)
Enterobacter cloacae	0	1 (0.21%)	1 (0.21%)
Subtotal	77 (16.59%)	85 (18.31%)	162 (34.91%)
Total	225 (48.49%)	239 (51.50%)	464 (100%)