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Updated: Aug 19, 2026

Constructing Mutants in Serotype 1 Streptococcus pneumoniae strain 519/43
Published on: September 11, 2020
[Streptococcus pneumoniae meningitis in children. Case records 1985 - 2003]
Luciana Nicolosi1, Laura Langella, Andrezej Krzysztofiak
1U.O. Malattie Infettive, Ospedale Bambino Gesù - IRCCS, Rome, Italy.
Insights
Streptococcus pneumoniae causes severe pediatric infections like meningitis and sepsis, with antibiotic resistance emerging. Vaccination is recommended for children over two months to reduce disease incidence and sequelae.
Area of Science:
- Pediatric Infectious Diseases
- Bacteriology
- Epidemiology
Context:
- Streptococcus pneumoniae is a leading cause of severe invasive diseases, including meningitis and sepsis, in children globally.
- Emerging penicillin resistance and the introduction of new vaccines highlight the need for updated epidemiological data.
- Pediatric meningitis and sepsis carry significant risks of mortality and long-term neurological complications.
Purpose:
- To analyze the incidence, epidemiology, diagnosis, and therapy of Streptococcus pneumoniae infections in hospitalized children.
- To assess the trends in antibiotic resistance and serotype prevalence over an 18-year period (1985-2003).
- To provide data supporting vaccination strategies and public health recommendations for invasive pneumococcal disease.
Summary:
- A review of 18 years of data (1985-2003) from Bambino Gesu Children's Hospital identified Streptococcus pneumoniae in 16.3% of children hospitalized with acute bacterial meningitis.
- The pathogen was most prevalent in children under two years old, with significant rates of long-term sequelae like hearing loss and neurological deficits.
- Antibiotic resistance to penicillin and ampicillin was observed in 2.3% of isolates, though resistance to cephalosporins and vancomycin was not detected.
Impact:
- Findings support the recommendation of the 7-valent pneumococcal conjugate vaccine for children over two months of age.
- Emphasizes the importance of ongoing surveillance for invasive pneumococcal infections, antibiotic resistance, and serotype distribution in pediatric populations.
- Highlights the persistent risk of severe outcomes and sequelae associated with pneumococcal meningitis and sepsis in children, underscoring the need for effective prevention and treatment strategies.
Abstract:
Acute bacterial meningitis and sepsis are the most severe among invasive diseases due to Streptococcus pneumoniae, particularly in pediatric age, and present a high risk of mortality and neurologic sequelae. S. pneumoniae is a major worldwide pathogen in children. The widespread emergence of penicillin-resistant pneumococci, a new pneumococcal conjugate vaccine, and the epidemiological prevalence of some serotypes, have recently focused attention on S. pneumoniae disease. We reviewed the data on incidence, epidemiology, diagnosis, therapy in children hospitalized with acute bacterial meningitis in the Division of Infectious Diseases of the Bambino Gesu Children's Hospital, Rome, between 1985- 2003. S. pneumoniae was isolated in 16.3% of the children, progressively emerging as the prevalent pathogen. The highest incidence was found in children younger than 2 yrs. The disease still presents a high rate of long-term sequelae, especially hearing loss and neurological handicap. Penicillin and ampicillin resistant isolates were found in 2.3% of positive cultures; no strain was resistant to cephalosporins and vancomycin. Our data support the recommendations to consider administration of the 7-valent pneumococcal conjugate vaccine for children older than 2 months of age, with special consideration for selected groups. We recommend monitoring all invasive pneumococcal infections in children, the emergence of antibiotic-resistance and changes in prevalence of pathogen serotypes.
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Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
