Clinical Implications of Pneumococcal Serotypes: Invasive Disease Potential, Clinical Presentations, and Antibiotic Resistance
- Authors
- Song, Joon Young; Nahm, Moon H.; Moseley, M. Allen
- Issue Date
- 1월-2013
- Publisher
- KOREAN ACAD MEDICAL SCIENCES
- Keywords
- Streptococcus pneumoniae; Polysaccharides; Bacterial; Bacterial Capsules; Serotyping; Pneumococcal Infections
- Citation
- JOURNAL OF KOREAN MEDICAL SCIENCE, v.28, no.1, pp.4 - 15
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF KOREAN MEDICAL SCIENCE
- Volume
- 28
- Number
- 1
- Start Page
- 4
- End Page
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104356
- DOI
- 10.3346/jkms.2013.28.1.4
- ISSN
- 1011-8934
- Abstract
- Streptococcus pneumoniae can asymptomatically colonize the nasopharynx and cause a diverse range of illnesses. This clinical spectrum from colonization to invasive pneumococcal disease (IPD) appears to depend on the pneumococcal capsular serotype rather than the genetic background. According to a literature review, serotypes 1, 4, 5, 7F, 8, 12F, 14, 18C, and 19A are more likely to cause IPD. Although serotypes 1 and 19A are the predominant causes of invasive pneumococcal pneumonia, serotype 14 remains one of the most common etiologic agents of non-bacteremic pneumonia in adults, even after 7-valent pneumococcal conjugate vaccine (PCV7) introduction. Serotypes 1, 3, and 19A pneumococci are likely to cause empyema and hemolytic uremic syndrome. Serotype 1 pneumococcal meningitis is prevalent in the African meningitis belt, with a high fatality rate. In contrast to the capsule type, genotype is more closely associated with antibiotic resistance. CC320/271 strains expressing serotype 19A are multidrug-resistant (MDR) and prevalent worldwide in the era of PCV7. Several clones of MDR serotype 6C pneumococci emerged, and a MDR 6D clone (ST282) has been identified in Korea. Since the pneumococcal epidemiology of capsule types varies geographically and temporally, a nationwide serosurveillance system is vital to establishing appropriate vaccination strategies for each country.
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