Serotype Childhood Invasive Pneumococcal Disease has Unique Characteristics Compared to Disease Caused by Other Streptococcus pneumoniae Serotypes

2013 ◽  
Vol 32 (7) ◽  
pp. e313
Author(s):  
&NA;
Keyword(s):  
Streptococcus Pneumoniae ◽  
Invasive Pneumococcal Disease ◽  
Pneumococcal Disease

scholarly journals Evaluating post-vaccine expansion patterns of pneumococcal serotypes

2020 ◽  
Author(s):  
Maile T. Phillips ◽  
Joshua L. Warren ◽  
Noga Givon-Lavi ◽  
Adrienn Tothpal ◽  
Gili Regev-Yochay ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Invasive Pneumococcal Disease ◽  
Jewish Population ◽  
Pneumococcal Disease ◽  
Pneumococcal Serotypes ◽  
Conjugate Vaccines ◽  
Pneumococcal Conjugate Vaccines ◽  
Vaccine Serotypes ◽  
Serotype Replacement ◽  
Disease Understanding

ABSTRACTStreptococcus pneumoniae remains a leading cause of morbidity and mortality. Pneumococcal conjugate vaccines (PCVs) are effective but target only a fraction of the more than 90 pneumococcal serotypes. As a result, the introduction of PCVs has been followed by the emergence of non-vaccine serotypes. With higher-valency PCVs currently under development, there is a need to understand and predict patterns of serotype replacement to anticipate future changes. In this study, we evaluated patterns of change in serotype prevalence post-PCV introduction in Israel. We found that the assumption that non-vaccine serotypes increase by the same proportion overestimates changes in serotype prevalence in Jewish and Bedouin children. Furthermore, pre-vaccine prevalence was positively associated with increases in prevalence over the study period. From our analyses, serotypes 12F, 8, 16F, 33F, 9N, 7B, 10A, 22F, 24F, and 17F were estimated to have gained the most cases of invasive pneumococcal disease through serotype replacement in the Jewish population. However, this model also failed to quantify some additional cases gained, suggesting that changes in carriage in children alone may be insufficient to explain serotype replacement in disease. Understanding of serotype replacement is important as higher-valency vaccines are introduced.

scholarly journals Invasive isolates of Streptococcus pneumoniae in Serbia: Antimicrobial susceptibility and serotypes

2013 ◽  
Vol 141 (1-2) ◽  
pp. 48-53 ◽  
Author(s):  
Ina Gajic ◽  
Vera Mijac ◽  
Lazar Ranin ◽  
Dragana Andjelkovic ◽  
Miroslava Radicevic ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Invasive Pneumococcal Disease ◽  
Antimicrobial Susceptibility ◽  
Pneumococcal Disease ◽  
Medical Problem ◽  
Resistance Rate ◽  
Reference Laboratory ◽  
Susceptibility Pattern ◽  
Antimicrobial Susceptibility Pattern ◽  
Resistance Rates

Introduction. Streptococcus pneumoniae is one of the leading causes of bacterial meningitis and sepsis. Invasive pneumococcal disease is a significant medical problem worldwide, particularly in children, due to a huge increase of pneumococcal resistance to antibiotics. Objective. The aim of the study was to investigate the antimicrobial susceptibility pattern of invasive pneumococcal isolates, as well as to determine whether decreased S. pneumoniae susceptibility to antibiotics was related to a particular serotype. Methods. Antimicrobial susceptibility to 19 antibiotics was determined in 58 invasive pneumococcal strains that were collected from seven regional centers during the period July 2009 to February 2011 in the National Reference Laboratory for streptococci and pneumococci. Results. The overall nonsusceptibility rate to penicillin was detected in 34% of pneumococcal isolates and to erythromycin in 36%. Higher resistance rates were observed among children than among adults. Penicillin resistance rate was 65% in children versus 22% in adults, while erythromycin nonsusceptibility rate was 47% in children versus 32% in adults. Co-resistance to penicillin and erythromycin was detected in 21% strains, mostly isolated from children. Multiresistance was found in one third of isolates. All strains were susceptible to vancomycin, linezolid, fluoroquinolones, telithromycin and rifampicin, while 23 (40%) isolates were susceptible to all tested antibiotics. The most common resistant serotypes were 19F and 14. Conclusion. The study has revealed that penicillin and macrolide resistance among invasive pneumococcal isolates is very high in Serbia. This emphasizes the need for continuous monitoring for invasive pneumococcal disease to document the serotype distribution and antimicrobial susceptibility pattern.

Serotype Distribution of Streptococcus pneumoniae causing Invasive Pneumococcal Disease at Bambino Gesù Children's Hospital in Rome: Is It Time for a New Vaccine?

2018 ◽  
Vol 14 (01) ◽  
pp. 013-015
Author(s):  
Elena Bozzola ◽  
Andrzej Krzysztofiak ◽  
Annausa Pantosti ◽  
Laura Lancella ◽  
Paola Bernaschi ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Invasive Pneumococcal Disease ◽  
Pneumococcal Disease ◽  
Pediatric Age ◽  
Immunization Programs ◽  
Serotype Distribution ◽  
Conjugate Vaccines ◽  
Pneumococcal Conjugate Vaccines ◽  
Children's Hospital ◽  
The Impact

AbstractDiseases caused by Streptococcus pneumoniae are mostly preventable infections by current immunization programs. The objective of this study was to evaluate the impact of the introduction of the heptavalent and the 13-valent pneumococcal conjugate vaccines (PCV7 and PCV13) on the burden of pneumococcal disease and on the serotype distribution of S. pneumoniae causing invasive pneumococcal diseases (IPDs) in the pediatric age over a 5-year study (from January 2008 till December 2012). We observed a decrease in IPD rate in children after PCV13 introduction despite increases in nonvaccine serotype (NVS) rates in 2011. Nevertheless, from 2012, an increase in IPD rates due to non-PCV13 serotypes was observed.

scholarly journals Complete Genome Sequence of a Sequence Type 4846 Streptococcus pneumoniae Serotype 12F Strain Isolated from a Meningitis Case in Japan

2019 ◽  
Vol 8 (11) ◽  
Author(s):  
Bin Chang ◽  
Masatomo Morita ◽  
Ken-ichi Lee ◽  
Makoto Ohnishi
Keyword(s):  
Streptococcus Pneumoniae ◽  
Invasive Pneumococcal Disease ◽  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Pneumococcal Disease ◽  
Sequence Type ◽  
Content Type ◽  
Meningitis Case

Streptococcus pneumoniae serotype 12F rarely colonizes the nasopharynx but commonly causes invasive pneumococcal disease. Here, we report the complete genome sequence of a sequence type 4846 (ST4846) S. pneumoniae serotype 12F strain isolated from a cluster of invasive pneumococcal disease patients in Japan.

scholarly journals Multidrug-resistant Streptococcus pneumoniae causing invasive pneumococcal disease isolated from a paediatric patient

2020 ◽  
Vol 90 ◽  
pp. 219-222 ◽  
Author(s):  
Revathy Arushothy ◽  
Hema Ramasamy ◽  
Rohaidah Hashim ◽  
Santhana Raj A.S ◽  
Fairuz Amran ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Paediatric Patient ◽  
Invasive Pneumococcal Disease ◽  
Pneumococcal Disease ◽  
Multidrug Resistant

scholarly journals Streptococcus pneumoniaemeningitis in Alberta pre- and postintroduction of the 7-valent pneumococcal conjugate vaccine

2011 ◽  
Vol 22 (4) ◽  
pp. 137-141 ◽  
Author(s):  
Jennie Johnstone ◽  
Gregory J. Tyrrell ◽  
Thomas J. Marrie ◽  
Sipi Garg ◽  
James D. Kellner ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Mortality Rate ◽  
Conjugate Vaccine ◽  
Invasive Pneumococcal Disease ◽  
High Mortality ◽  
Clinical Characteristics ◽  
Pneumococcal Disease ◽  
Laboratory Data ◽  
Appropriate Therapy ◽  
Meningitis In Children

The objective of this study was to describe the epidemiology, clinical characteristics, microbiology and outcomes of patients of all ages withStreptococcus pneumoniaemeningitis between 2000 and 2004; two years pre- and postintroduction of anS pneumoniae7-valent conjugate vaccine program in Alberta in children younger than two years of age. The high mortality rate associated withS pneumoniaemeningitis, despite appropriate therapy, suggests that prevention ofS pneumoniaemeningitis is critical. Despite implementation of a PCV-7 program in Alberta, rates ofS pneumoniaemeningitis in children younger than two years of age is still high. Thus, continued research into safe and efficacious vaccines covering a broader range ofS pneumoniaeserotypes is necessary.OBJECTIVE: To describe the epidemiology, clinical characteristics, microbiology and outcomes of patients of all ages withStreptococcus pneumoniaemeningitis two years pre- and postintroduction of aS pneumoniae7-valent conjugate vaccine program in Alberta in children <2 years of age.METHODS: Between 2000 and 2004, all cases of invasive pneumococcal disease in Alberta were identified. From this cohort, patients withS pneumoniaemeningitis were identified by chart review. Clinical data, laboratory data and in-hospital outcomes were collected.RESULTS: Of the 1768 cases of invasive pneumococcal disease identified between 2000 and 2004, 110 (6.2%) hadS pneumoniaemeningitis. The overall incidence was 0.7 per 100,000 persons and remained unchanged over the study period. The rate in children <2 years of age appeared to fall over time, from 10.5 per 100,000 persons in 2000 to five per 100,000 persons in 2004, although there was insufficient evidence of a statistically significant time trend within any age group. Overall, the mean age was 30 years and 47% were male. In-hospital mortality was 20%, ranging from 6% in those ≤2 years of age to 31% for those ≥18 years of age, despite appropriate antimicrobial therapy.CONCLUSION: The high mortality rate associated withS pneumoniaemeningitis suggests that prevention by vaccination is critical. In children <2 years of age, there was a downward trend in the rate ofS pneumoniaemeningitis after implementation of theS pneumoniae7-valent conjugate vaccine program, but rates were still high.

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