Longitudinal plasma cytokine concentrations and recurrent wheezing after RSV bronchiolitis.

Background: Respiratory syncytial virus (RSV) bronchiolitis in young children has been associated with increased risk for developing recurrent wheezing, but the underlying mechanisms, are not completely defined. We hypothesized that RSV induces a disregulated immune response defined by a distinct cytokine profile in infants at increased risk for developing recurrent wheezing.

Methods: Previously healthy infants less than 12 months of age hospitalized with a first episode of RSV bronchiolitis were enrolled and blood samples and clinical and epidemiological data collected.

[Patient care, right to information and consent for minors in situations of parental conflict. Clinical guidelines in the context of Spanish legislation].

Among the main social and legislative changes as regards family matters that have taken place in Spain in the last few years, are included: (i) the gradual increase in legal disputes between parents, and (ii) the introduction of Law 26/2015 on Child Protection, which modified Law 41/2002 on the Freedom of the Patient. These searched for a balance between the rights of minors and the powers of the parents, particularly when the former had not reached 16 years or had sufficient maturity or, having reached it, the decision puts their life or health at severe risk. Likewise, it has led to a jurisprudence that determines that, for any minor, there are particularly sensitive, "special" or "important" health care actions, such as psychotherapy or surgical treatments, which require, with exceptions, the consent of both parents for it to be carried out.

Neurologic Complications in Children Hospitalized With Influenza Infections: Prevalence, Risk Factors and Impact on Disease Severity.

Background: Influenza infection is a common cause of respiratory disease and hospitalization in children. Neurologic manifestations of the infection have been increasingly reported and may have an impact on the severity of the disease. The aim of this study is to describe neurologic events in pediatric patients hospitalized with influenza and identify associated risk factors.

Detection of Respiratory Viruses in the Clinical Outcome of Children With Fever and Neutropenia.

Background: Several evidence-based guidelines for the management of children with febrile neutropenia (FN) have been published, with special focus in bacterial and fungal infections. However, the role of acute respiratory infections caused by respiratory viruses (RV) has not been clearly established. The aim of this study was to evaluate the epidemiology, clinical presentation and outcome of acute respiratory infections in children with FN.

Impact of 13-valent pneumococcal conjugate vaccination on invasive pneumococcal disease in children under 15 years old in Madrid, Spain, 2007 to 2016: The HERACLES clinical surveillance study.

Streptococcus pneumoniae is a major cause of morbidity and mortality worldwide. Using the data from the HERACLES clinical surveillance study (2007-2016), we describe the population impact of the 13-valent pneumococcal conjugate vaccine (PVC13) on invasive pneumococcal disease (IPD) in children <15 years of age in the Community of Madrid, Spain. After six years of the inclusion of PCV13 in the vaccination calendar (2010-2016), and despite changes in the Regional Immunization Programme that limited its availability, the net benefit incidence rate (IR) of IPD fell by 70.

[Invasive disease due to Streptococcus pyogenes: Changes in incidence and prognostic factors].

Introduction: Invasive group A streptococcal disease (iGASD) is a serious infection in children. Several studies have shown an increased incidence in the past years.

Objective: To evaluate the characteristics and outcome of iGASD in children, and to determine changes in incidence or severity.

[Invasive meningococcal disease in children and adults in a tertiary level hospital. Recent epidemiology and prognostic factors].

Introduction: Invasive meningococcal disease (IMD) has a high morbidity and mortality in children and adults. The aim of this study was to describe the clinical and epidemiological characteristics of patients with IMD, to compare them among children and adults, and to determine prognostic factors and changes in epidemiology during a 14-year period.

Methods: A retrospective study was conducted on patients admitted to a third level hospital with IMD between 2004 and 2017.

[Child hospital admissions associated with influenza virus infection in 6 Spanish cities (2014-2016)].

Introduction: There are only a limited number of studies on the impact of influenza in the Spanish child population. The present work intends to increase this knowledge by studying some key aspects, such as the incidence of hospital admissions, clinic variables, comorbidities, and the vaccination status in the hospitalised children.

Methods: A retrospective, observational study was conducted by reviewing the medical records of children under 15 years and hospitalised due to community acquired influenza confirmed microbiologically, during 2́flu seasons (2014-2015 and 2015-2016).

Kingella kingae as the Main Cause of Septic Arthritis: Importance of Molecular Diagnosis.

Background: Kingella kingae is an emergent pathogen causing septic arthritis (SA) in children.The objective of this study was to analyze the etiology of SA in children before and after the implementation of universal 16S rRNA gene polymerase chain reaction and sequencing (16SPCR) in synovial fluid.

Methods: Children ≤14 years with acute SA from a Madrid cohort (2002-2013) were reviewed.

Impact of 13-valent pneumococcal conjugate vaccine on pneumococcal meningitis in children.

Objectives: To evaluate the impact of 13-valent pneumococcal conjugate vaccine on pneumococcal meningitis in children.

Methods: Children younger than 15years of age attending 27 hospitals in the Region of Madrid with confirmed pneumococcal meningitis were identified in a prospective surveillance study, from 2007 to 2015. Clinical data, neurological sequelae, pneumococcal vaccination status, serotyping and antibiotic susceptibility were recorded.

Effect of the different 13-valent pneumococcal conjugate vaccination uptakes on the invasive pneumococcal disease in children: Analysis of a hospital-based and population-based surveillance study in Madrid, Spain, 2007-2015.

In the Community of Madrid, the 13-valent pneumococcal conjugate vaccine (PCV13) replaced the 7-valent (PCV7) in the fully government-funded Regional Immunization Program (RIP) in May, 2010, but was later excluded in May, 2012, and included again in January, 2015. These unique changes allowed us to assess the impact of the different pneumococcal vaccination policies on PCV13 uptake in infants and on the incidence rate (IR) of invasive pneumococcal disease (IPD) in children <15 years old. In this prospective, active, surveillance study, we estimated PCV13 uptakes, IR and incidence rate ratios (IRR) for total IPD and for IPD caused by PCV13- and non-PCV13 serotypes in children <15 years, stratified by age, in four periods with different vaccination policies: fully government-funded PCV7 vaccination, fully government-funded PCV13, mixed public/private funding and only private funding.

Expansion of serotype coverage in the universal pediatric vaccination calendar: short-term effects on age- and serotype-dependent incidence of invasive pneumococcal clinical presentations in Madrid, Spain.

In Madrid, Spain, the 13-valent pneumococcal conjugate vaccine (PCV13) replaced PCV7 in the pediatric universal vaccination calendar in June 2010. A prospective clinical surveillance that included all children hospitalized with culture- and/or PCR-confirmed invasive pneumococcal disease (IPD) was performed in all Madrid hospitals. The incidence rates (IRs) (defined as the number of cases/100,000 inhabitants aged <15 years) in the PCV7 (May 2007 to April 2010) versus PCV13 (May 2011 to April 2012) periods were compared.

Impact of introduction of conjugate vaccines in the vaccination schedule on the incidence of pediatric invasive pneumococcal disease requiring hospitalization in Madrid 2007 to 2011.

Background: Differences in invasive pneumococcal disease (IPD) in children are expected after a change from 7-valent pneumococcal conjugate vaccine (PCV7) to 13-valent pneumococcal conjugate vaccine (PCV13). Universal vaccination with PCV7 started in Madrid in November 2006, and it switched to PCV13 in June 2010.

Methods: A prospective, laboratory-confirmed (by culture or polymerase chain reaction), clinical surveillance including all pediatric IPD requiring hospitalization in Madrid was performed in all hospitals with a pediatric department and included four 1-year periods from May 2007 to April 2011.

Laboratory-based, 2-year surveillance of pediatric parapneumonic pneumococcal empyema following heptavalent pneumococcal conjugate vaccine universal vaccination in Madrid.

Background: In October 2006, the heptavalent pneumococcal conjugate vaccine was included in the Madrid vaccination calendar, warranting serotype (St) surveillances in pneumococcal pediatric parapneumonic empyema (PPE).

Methods: A prospective 2-year (May 2007-April 2009) laboratory-confirmed PPE surveillance was performed in 22 hospitals. All isolates (for serotyping) and culture-negative pleural fluids were sent to the reference laboratory for polymerase chain reaction (PCR) analysis.