Table 4 Comparison of antibiotic resistance of H. influenzae isolates between β-lactamase positive and negative groups.

From: Impact of the COVID-19 pandemic on Haemophilus influenzae infections in pediatric patients hospitalized with community acquired pneumonia

Antibiotics

No. (%) of resistant isolates

β-lactamase positive (n = 823)

β-lactamase negative (n = 163)

Ampicillin

822 (99.9)

25 (15.3) ****

Amoxicillin-clavulanate

164 (19.9)

25 (15.3)

Cefaclor

347 (42.2)

25 (15.3) ****

Cefuroxime

340 (41.3)

25 (15.3) ****

Cefotaxime

0 (0.0)

0 (0.0)

Rifampicin

1 (0.1)

0 (0.0)

Ofloxacin

2 (0.2)

0 (0.0)

Tetracycline

60 (7.3)

2 (1.2) **

Chloramphenicol

61 (7.4)

0 (0.0) ****

Trimethoprim-sulfamethoxazole

578 (70.2)

87 (53.4) ****

MDR isolates

354 (43.0)

25 (15.3) ****

  1. * P < 0.05; ** P < 0.01; *** P < 0.001; **** P < 0.0001.