Detection and Antibiotic Susceptibility Patterns of Staphylococcus aureus, Streptococcus pyogenes and Streptococcus spp. Isolated from Sputum of Patients with Respiratory Tract Infections

Ehsan F Hussein

Ehsan F Hussein University of Babylon, College of Science for Women, Department of Biology, Babylon, Iraq.

Keywords: Communicable Respiratory Tract Disease, Sputum, Staphylococcus aureus, Streptococcus pyogenes, Streptococcus spp., Antibiotics

Abstract

Objectives: Respiratory tract infections which are transmitted from patients to other patients or non-patients, and affect all ages, range from lower tract to upper tract infections. Sputum production represents one of the symptoms of these infections in some cases. These infections are associated with pathogenic gram-positive bacteria such as Staphylococcus aureus, Streptococcus pyogenes and Streptococcus spp.
Materials and Methods: Sputum specimens were collected at Imam Ali Hospital in Kotha District, Babylon Province for the detection of S. aureus, S. pyogenes and Streptococcus spp. using the bio-chemical and VITEK 2 system tests, as well as for identifying the antibiotic sensitivity patterns against these bacterial species using the standard disk diffusion procedure on the Mueller–Hinton agar.

Results: The percentage of positive growth of the pathogenic gram- positive bacteria was 46.0%, and for S. aureus, S. pyogenes and Streptococcus spp., the values were 29.166%, 37.500% and 33.334%,
respectively. Males were found to be more susceptible to the infection than females (87.5% and 12.5%, respectively). The antibiotic sensitivity patterns showed that ceftriaxone, azithromycin and amoxiclav were
effective against S. aureus, whereas ciprofloxacin, azithromycin, levofloxacin and amoxicillin were effective against S. pyogenes. Ciprofloxacin, levofloxacin, meropenem and azithromycin were found
to be effective against Streptococcus spp.
Conclusions: The growth percentages for S. aureus, S. pyogenes and Streptococcus spp. were 29.166%, 37.5% and 33.334%, respectively. Males were more susceptible to infection than females and among
all the antibiotics used in this study, only azithromycin was effective against all S. aureus, S. pyogenes and Streptococcus spp. isolates.

How to cite this article:
Hussein E F. Detection and Antibiotic Susceptibility
Patterns of Staphylococcus aureus, Streptococcus
pyogenes and Streptococcus spp. Isolated from
Sputum of Patients with Respiratory Tract
Infections. J Commun Dis. 2024;56(1):50-56.

DOI: https://doi.org/10.24321/0019.5138.202409

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