[Streptococcal infection: variants and morphological manifestations]

Area of Science:

• Pediatric Infectious Diseases
• Pathology
• Epidemiology

Background:

• Streptococcal infections (SI) pose a significant mortality risk in children.
• Delayed or missed clinical diagnosis complicates SI management and outcomes.
• Previous studies have not fully elucidated the pathological manifestations and risk factors for fatal SI in children.

Observation:

• Retrospective analysis of 82 pediatric deaths due to SI between 1977-1985.
• Cases were categorized based on disease generalization: pronounced (pharyngeal, extrapharyngeal) and localized (pulmonary, tonsillar).
• Autopsy findings revealed necrotic or purulent-necrotic inflammation and dissemination in regional lymph nodes and distant organs.

Findings:

• Higher incidence of SI was observed in children, particularly those who died at home.
• A significant proportion of cases involved pronounced generalization, including scarlet fever, or localized infections affecting lungs and tonsils.
• Viral respiratory infections frequently preceded SI, and thymomegaly with adrenal hypoplasia were linked to sudden death.

Implications:

• Emphasizes the need for heightened clinical suspicion and prompt diagnosis of SI in pediatric populations.
• Highlights the role of co-infections and anatomical predispositions in severe streptococcal disease.
• Findings underscore the importance of considering SI in unexplained pediatric deaths, especially when preceded by respiratory symptoms.