[Pneumonia caused by Streptococcus pyogenes. Report of one case]

Area of Science:

• Infectious Diseases
• Pulmonology
• Microbiology

Background:

• Streptococcus Pyogenes is a common bacterial pathogen.
• Bacteremia without a clear source requires thorough investigation.
• Pneumonia can present with diverse symptoms.

Observation:

• A 58-year-old female presented with fever and vomiting.
• Blood cultures confirmed Streptococcus Pyogenes bacteremia.
• Abdominal CT scan revealed right basal pneumonia.

Findings:

• The patient received antimicrobial treatment and oral cefadroxil.
• Resolution of symptoms and normalization of C-reactive protein were observed post-treatment.
• Pneumonia was identified as the source of bacteremia.

Implications:

• Pneumonia should be considered in cases of Streptococcus Pyogenes bacteremia of unknown origin.
• Prompt diagnosis and management are essential to prevent severe outcomes.
• This case highlights the importance of integrating imaging and microbiology for diagnosing complex infections.