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pneumococcal pneumonia in Children

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https://www.readbyqxmd.com/read/28523054/acute-bacterial-meningitis-in-children-presenting-to-the-children-s-hospital-lahore-before-and-after-pneumococcal-vaccine-in-pakistan-national-immunization-program-a-comparison
#1
Attia Bari, Fatima Zeeshan, Aizza Zafar, Hasan Ejaz, Uzma Jabeen, Ahsan Waheed Rathore
OBJECTIVE: To describe bacteriological profile, morbidity and mortality of acute bacterial meningitis (ABM) in children and to compare these parameters before and after the introduction of Pneumococcal vaccine in Pakistan National Immunization Program. METHODS: The present descriptive study was conducted at the Department of Paediatric Medicine of The Children's Hospital Lahore from January 2012 to December 2015. A total of 503 children one month to five years of age admitted with diagnosis of meningitis were included...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28513594/regionally-compartmentalized-resident-memory-t-cells-mediate-naturally-acquired-protection-against-pneumococcal-pneumonia
#2
N Ms Smith, G A Wasserman, F T Coleman, K L Hilliard, K Yamamoto, E Lipsitz, R Malley, H Dooms, M R Jones, L J Quinton, J P Mizgerd
As children age, they become less susceptible to the diverse microbes causing pneumonia. These microbes are pathobionts that infect the respiratory tract multiple times during childhood, generating immunological memory. To elucidate mechanisms of such naturally acquired immune protection against pneumonia, we modeled a relevant immunological history in mice by infecting their airways with mismatched serotypes of Streptococcus pneumoniae (pneumococcus). Previous pneumococcal infections provided protection against a heterotypic, highly virulent pneumococcus, as evidenced by reduced bacterial burdens and long-term sterilizing immunity...
May 17, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28513136/cold-chain-free-storable-hydrogel-for-infant-friendly-oral-delivery-of-amoxicillin-for-the-treatment-of-pneumococcal-pneumonia
#3
Keming Xu, Liang Li, Mingyue Cui, Yiyuan Han, Huseyin Enis Karahan, Vincent Tak Kwong Chow, Chenjie Xu
Pneumonia is the major cause of death in children under five, particularly in developing countries. Antibiotics such as amoxicillin greatly help in mitigating this problem. However, there is lack of an infant/toddler-friendly formulation for countries with limited clean water and electricity. Here we report the development of a shear-thinning hydrogel system for the oral delivery of amoxicillin to the infant/toddler patients, without the need of clean water and refrigeration. The hydrogel formulation consists of metolose (hydroxypropyl methylcellulose) and amoxicillin...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28510985/changing-diagnosis-coding-routines-may-confound-the-results-of-longitudinal-childhood-pneumonia-studies
#4
M Eriksson, A Nilsson, R Bennet
AIM: This Swedish study compared the discharge diagnosis codes used for children up to the age of five hospitalised for acute lower respiratory tract infections before and after the introduction of the pneumococcal conjugate vaccine in 2007. METHODS: The International Classification of Diseases - 10(th) revision codes were used. We compared the discharge diagnosis codes at the Astrid Lindgren Children's Hospital from 1 July 2005 to 30 June 2007 (n=1,127) and 1 July 2011 to 30 June 2013 (n=1,240) in relation to the diagnostic methods used...
May 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28507246/the-pneumococcal-type-1-pilus-genes-are-thermoregulated-and-are-repressed-by-a-member-of-the-snf2-protein-family
#5
Alan Basset, Muriel Herd, Raecliffe Daly, Simon L Dove, Richard Malley
In Streptococcus pneumoniae, the type 1 pilus is involved in many steps of pathogenesis, including adherence to epithelial cells, mediation of inflammation, escape from macrophages, and the formation of biofilms. The type 1 pilus genes are expressed in a bistable fashion with cells switching between ON and OFF expression states. Bistable expression of these genes is due to their control by RlrA, a positive regulator subject to control by a positive feedback loop. The type 1 pilus genes are also thought to be negatively regulated by a large number of repressors...
May 15, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28489454/acquisition-and-transmission-of-streptococcus-pneumoniae-is-facilitated-during-rhinovirus-infection-in-families-with-children
#6
Sinikka Karppinen, Johanna Teräsjärvi, Kari Auranen, Linnea Schuez-Havupalo, Lotta Siira, Qiushui He, Matti Waris, Ville Peltola
RATIONALE: Laboratory and clinical evidence suggests synergy between rhinoviruses and Streptococcus pneumoniae in the pathogenesis of respiratory tract infections. However, it is unclear whether rhinoviruses promote pneumococcal acquisition and transmission. OBJECTIVES: To describe the impact of rhinovirus infection on acquisition and transmission of pneumococci within families with children. METHODS: We investigated 29 families with at least two children...
May 10, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28486544/serotype-distribution-of-streptococcus-pneumoniae-causing-invasive-disease-in-children-in-the-post-pcv-era-a-systematic-review-and-meta-analysis
#7
Evelyn Balsells, Laurence Guillot, Harish Nair, Moe H Kyaw
BACKGROUND: Routine immunisation with pneumococcal conjugate vaccines (PCV7/10/13) has reduced invasive pneumococcal disease (IPD) due to vaccine serotypes significantly. However, an increase in disease due to non-vaccine types, or serotype replacement, has been observed. Serotypes' individual contributions to IPD play a critical role in determining the overall effects of PCVs. This study examines the distribution of pneumococcal serotypes in children to identify leading serotypes associated with IPD post-PCV introduction...
2017: PloS One
https://www.readbyqxmd.com/read/28474099/a-three-step-diagnosis-of-pediatric-pneumonia-at-the-emergency-department-using-clinical-predictors-c-reactive-protein-and-pneumococcal-pcr
#8
Gabriel Alcoba, Kristina Keitel, Veronica Maspoli, Laurence Lacroix, Sergio Manzano, Mario Gehri, René Tabin, Alain Gervaix, Annick Galetto-Lacour
Recommendations for the management of community-acquired pneumonia (CAP) advocate that, in the absence of the clinical and laboratory findings typical of bacterial CAP, antibiotics are not required. However, the true value of the clinical and laboratory predictors of pediatric CAP still needs to be assessed. This prospective cohort study in three emergency departments enrolled 142 children with radiological pneumonia. Pneumonia with lung consolidation was the primary endpoint; complicated pneumonia (bacteremia, empyema, or pleural effusion) was the secondary endpoint...
May 4, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28472614/serotype-changes-and-antimicrobial-nonsusceptibility-rates-of-invasive-and-non-invasive-streptococcus-pneumoniae-isolates-after-implementation-of-10-valent-pneumococcal-nontypeable-haemophilus-influenzae-protein-d-conjugate-vaccine-phid-cv-in-bulgaria
#9
Lena Setchanova, Marianna Murdjeva, Iglika Stancheva, Alexandra Alexandrova, Maria Sredkova, Temenuga Stoicheva, Magda Yoneva, Anna Kurchatova, Ivan Mitov
The 10-valent pneumococcal conjugate vaccine (PCV10) has been included in Bulgarian Childhood Immunization Program since 2010. This study aimed to assess serotype distribution and antimicrobial resistance of 198 invasive and non-invasive Streptococcus pneumoniae strains that had been isolated in Bulgaria during 2011-2016 from patients with invasive (IPD) and non-invasive (NIPD) pneumococcal diseases. The most common invasive serotypes were 3 (10.1%), 19F (4.0%), and 7F (3.0%). A significant decrease in the proportion of invasive vaccine types (VTs) from 64...
May 1, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28467237/effect-of-the-13-valent-pneumococcal-conjugate-vaccine-on-nasopharyngeal-carriage-by-respiratory-pathogens-among-greenlandic-children
#10
Johan Emdal Navne, Anders Koch, Hans-Christian Slotved, Mikael Andersson, Mads Melbye, Karin Ladefoged, Malene Børresen
BACKGROUND: In 2010, Greenland introduced the 13-valent pneumococcal conjugate vaccine (Prevnar 13®- PCV-13) in the childhood immunisation program. The authors aimed to evaluate the impact of PCV-13 on nasopharyngeal carriage of bacteria frequently associated with respiratory infections in children. METHOD: In 2013 a cross-sectional population-based study of nasopharyngeal carriage was conducted among Greenlandic children aged 0-6 years and results were compared with an equivalent study from 2011...
2017: International Journal of Circumpolar Health
https://www.readbyqxmd.com/read/28466611/occult-bacteremia-should-we-look-for-the-needle-in-the-haystack
#11
Neta Baram, Orli Megged, Giora Weiser
BACKGROUND: Once a well-recognized entity, occult bacteremia (OB) is no longer a significant or serious bacterial infection. First following the introduction of the Haemophilus influenzae type B vaccine and now with the implementation of the conjugate pneumococcal vaccine (PCV), the number of cases has declined significantly. This has led to a change in many published guidelines to avoid taking blood cultures in fully vaccinated children presenting with fever. In Israel, the introduction of the PCV13 is now widespread...
November 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28453405/a-meta-analysis-of-antimicrobial-susceptibility-profiles-for-pneumococcal-pneumonia-in-sub-saharan-africa
#12
Pui-Ying Iroh Tam, Ayebo E Sadoh, Stephen K Obaro
BACKGROUND: Pneumonia causes an enormous burden of childhood disease globally, particularly in low- and middle-income countries. Pneumococcus is the most common bacterial aetiology of pneumonia; however, antimicrobials are limited and may not adequately address the local epidemiology of the region. AIM: To undertake a review and meta-analysis of pneumonia studies in sub-Saharan Africa to evaluate antimicrobial susceptibility patterns in childhood pneumonia. METHODS: Articles published in PubMed and Google between 2006 and 2016 which evaluated antimicrobial susceptibility profiles of pneumococcal pneumonia in children in sub-Saharan Africa were identified...
April 28, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28449971/indirect-herd-protection-following-pneumococcal-conjugated-vaccines-introduction-a-systematic-review-of-the-literature
#13
REVIEW
Gal Tsaban, Shalom Ben-Shimol
BACKGROUND: Pneumococcal diseases are major causes of morbidity among adults, especially those over 50years of age. While pneumococcal conjugated vaccines (PCV's) impact on pneumococcal disease rates among children is well established, the extent of its impact on adult pneumococcal related illness remains unclear. The aim of this systematic literature review was to describe the impact of PCV introduction to childhood national immunization programs worldwide on PCV-naive adult population...
May 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28443585/pneumococcal-nasopharyngeal-carriage-in-young-healthy-children-after-pneumococcal-conjugate-vaccine-in-turkey
#14
Ahmet Arvas, Haluk Çokuğraş, Emel Gür, Nevriye Gönüllü, Zeynep Taner, Hrisi Bahar Tokman
AIMS: The purpose of this study was to determine the prevalence of nasopharyngeal carriage of Streptococcus pneumoniae in healthy children aged 0-6 years who were vaccinated with pneumococcal conjugate vaccine. METHODS: The cross-sectional study was conducted on 150 healthy Turkish children aged between 1 month and 6 years of age. Serotyping was performed and risk factors of carriage were evaluated. RESULTS: The overall carriage rate was 14%...
April 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28422083/nasopharyngeal-carriage-and-antimicrobial-susceptibility-patterns-of-streptococcus-pneumoniae-among-children-under-five-in-southwest-ethiopia
#15
Tiglu Gebre, Mulualem Tadesse, Dossegnaw Aragaw, Dagne Feye, Habtamu Bedimo Beyene, Dinberu Seyoum, Mekidim Mekonnen
Nasopharyngeal carriage of Streptococcus pneumoniae is found to play an important role in the development and transmission of pneumococcal diseases. In this study, we assessed the nasopharyngeal carriage, antimicrobial susceptibility patterns and associated risk factors of S. pneumoniae among children under five. A total of 361 children under five attending the outpatient department of Shanan Gibe Hospital in Jimma, Southwest Ethiopia were enrolled from June to September 2014. Nasopharyngeal specimens were collected using sterile plastic applicator rayon tipped swab and inoculated on tryptone soy agar supplemented with 5% sheep blood and 5 µg/mL gentamycin...
April 19, 2017: Children
https://www.readbyqxmd.com/read/28419005/clinical-utility-of-polymerase-chain-reaction-testing-for-streptococcus-pneumoniae-in-pediatric-cerebrospinal-fluid-samples-a-diagnostic-accuracy-study-of-more-than-2000-samples-from-2004-2015
#16
Abdullah Alqayoudhi, Maryke Nielsen, Nicola O'Sullivan, Mary Corcoran, Patrick J Gavin, Karina M Butler, Robert Cunney, Richard J Drew
The aim of this retrospective study was to review the diagnostic accuracy of real-time polymerase chain reaction (PCR) testing of cerebrospinal fluid (CSF) samples for Streptococcus pneumoniae DNA in comparison with traditional bacterial culture. The hypothesis was that PCR is more sensitive than culture and would detect more cases of pneumococcal meningitis, particularly in children treated with antimicrobials before CSF sampling occurred. Patients younger than 16 years who had a CSF sample tested for S.pneumoniae DNA by PCR between 2004 and 2015 were included...
April 17, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28414696/decrease-in-pneumococcal-otitis-media-cultures-with-concomitant-increased-antibiotic-susceptibility-in-the-pneumococcal-conjugate-vaccines-era
#17
Basel Jabarin, Jacob Pitaro, Tzilia Lazarovitch, Haim Gavriel, Limor Muallem-Kalmovich, Ephraim Eviatar, Tal Marom
OBJECTIVE: To study the change in the incidence and antibiotic susceptibility patterns of Streptococcus pneumoniae (Spn) in cultures obtained from children with otitis media (OM) during the pneumococcal conjugate vaccines (PCVs) era. STUDY DESIGN: Retrospective. SETTING: Secondary medical care center. PATIENTS: Children less than 8 years who presented with OM and had positive pneumococcal cultures during January 1, 2007 to December 12, 2014 were identified...
April 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28414567/disease-burden-of-community-acquired-pneumonia-among-children-under-5%C3%A2-y-old-in-china-a-population-based-survey
#18
Yan Li, Zhijie An, Dapeng Yin, Yanmin Liu, Zhuoying Huang, Yujie Ma, Hui Li, Qi Li, Huaqing Wang
BACKGROUND: To obtain the baseline data on the incidence and cost of community acquired pneumonia among under-5 children for future studies, and provide evidence for shaping China's strategies regarding pneumococcal conjugate vaccine (PCV). METHODS: Three townships from Heilongjiang, Hebei and Gansu Province and one community in Shanghai were selected as study areas. A questionnaire survey was conducted to collect data on incidence and cost of pneumonia among children under 5 y old in 2012...
April 17, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28409537/impact-of-pneumococcal-conjugate-vaccines-for-children-in-high-and-non-high-income-countries
#19
Robert Cohen, Jérémie François Cohen, Martin Chalumeau, Corinne Levy
The high level of effectiveness of pneumococcal conjugate vaccines (PCVs) was demonstrated initially in high-income countries (HICs). However, because the burden of pneumococcal diseases (PDs) is greater in non-high-income countries (NHICs) than HICs, the assessment of these vaccines in this latter setting is crucial. Areas covered: PubMed was used to search for literature related to the effectiveness of PCVs. Several studies described the effectiveness of PCVs in NHICs, and we compare the impact of PCVs on the incidence of invasive pneumococcal disease (IPD) and pneumonia in HICs and NHICs...
April 28, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28392142/memory-b-cell-response-to-a-pcv-13-booster-in-3-5year-old-children-primed-with-either-pcv-7-or-pcv-13
#20
Johannes Trück, Amber Thompson, Begonia Morales-Aza, Elizabeth A Clutterbuck, Merryn Voysey, Ed Clarke, Matthew D Snape, Dominic F Kelly, Adam Finn, Andrew J Pollard
Pneumococcal protein-polysaccharide conjugate vaccines provide direct protection against Streptococcus pneumoniae through the induction of persistent anti-polysaccharide antibodies, and by priming for a rapid secondary antibody response. Memory B cells (BMEM) generated during an initial immune response are responsible for both the more rapid and quantitatively greater secondary antibody response and are also thought to contribute to the ongoing production of plasma cells providing long-term antibody persistence...
May 9, 2017: Vaccine
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