Children with sickle cell disease are at high risk of complications from influenza infection and have been recommended to receive annual influenza vaccine since the 1970s. Few safety studies, however, have examined the safety of influenza vaccine in this population.

This large cohort study did not find an association between influenza vaccination and hospitalization for sickle cell crises in children with sickle cell anemia. (Read the full article)

Children with special health care needs (CSHCN) account for more than one-third of pediatric health care costs. Little is known regarding the impact of shared decision-making (SDM) over time on child health care expenditures and utilization.

In a national sample, we found that increasing SDM was associated with decreased health care costs and utilization for CSHCN. Results support prospective studies to determine if pediatric interventions to foster SDM reduce the financial burden of caring for CSHCN. (Read the full article)

Clinical trials in children with severe traumatic brain injury (TBI) are challenging. To date, no work has been published that permits clinical investigators to estimate the number and compositional features of sites from which to recruit children with severe TBI into clinical trials.

Children with severe TBI are infrequent. Less than 5% of all US hospitals discharged more than 78% of severe TBI cases. To maximize enrollment efficiency for future clinical trials, attention has to be paid to selecting appropriate hospital sites. (Read the full article)

The medical home is associated with beneficial outcomes in children with special health care needs and in the entire pediatric population. It is unknown if it benefits the majority of the pediatric population (ie, children without special health care needs).

This study is the first to demonstrate an association between the medical home and beneficial health care utilization, child health, and health-promoting behavior outcomes in children without special health care needs. (Read the full article)

Overweight has been associated with an increased risk of asthma in children, although the published literature is contradictory. How change in overweight status during childhood affects asthma risk has not been well studied.

Among children whose weight has normalized, high BMI during the first 4 years of life does not increase the risk of asthma at school age. Current high BMI is associated with increased risk of asthma and sensitization to inhalant allergens. (Read the full article)

Smoking during pregnancy has been related to thicker carotid intima media thickness in young adults, and this was also shown in neonates.

This study is the first to show that the effect of smoking during pregnancy on the vasculature of children is (still) visible at the age of 5 years. Pregnancy appears to be the critical period for this damage to occur. (Read the full article)

The quality of the relationship between mother and child affects the child’s neurodevelopment, emotion regulation, and stress response. Extreme or sustained stress responses are associated with dysregulation of physiologic systems involved in energy balance, which could lead to obesity.

The prevalence of obesity in adolescence was more than twice as high among those youth who in early childhood had poor-quality relationships with their mothers compared with those with better relationships. (Read the full article)

Three-fourths of US preschool-age children are in child care; many are not achieving recommended levels of physical activity. Daily physical activity is essential for motor and socioemotional development and for the prevention of obesity. Little is known about physical-activity barriers in child care.

Injury and school-readiness concerns may inhibit children’s physical activity in child care. Fixed playground equipment that meets licensing codes is unchallenging and uninteresting to children. Centers may cut time and space for gross motor play to address concerns about school readiness. (Read the full article)

Upper respiratory tract infections (URIs) are very common in children. Currently, there are no effective preventive measures for URI. There are no studies on the effect of montelukast for prevention of URI.

In a randomized, double-blind, placebo-controlled study of preschool-aged children, 12-week prophylactic treatment with montelukast did not reduce the incidence of URI. (Read the full article)

Studies on vaccine safety are crucial to the ongoing success of our national immunization program. ITP has a known association with MMR in young children, occurring in 1 in 40 000 doses. The risk after other childhood vaccines is unknown.

This study found no increased risk of ITP after vaccines other than MMR in young children, confirmed an association of ITP with MMR, and also found that ITP may occur after certain other vaccines in older children. (Read the full article)

Chronic wet cough is a common symptom well recognized by pediatricians. Protracted bacterial bronchitis is defined as more than 4 weeks of wet cough that responds to antibiotic treatment. Diagnosis of protracted bacterial bronchitis is not readily accepted by pediatricians

Children with chronic wet cough often have bronchitis, which is evident during bronchoscopy. Purulent bronchial secretions suggest the presence of bacterial infection. Children with chronic wet cough frequently have a bacterial infection of the lower airway. (Read the full article)

Refugee children arriving in the United States have had higher rates of elevated blood lead levels than US-born children. The Centers for Disease Control and Prevention recommends blood lead screening of all refugee children within 3 months after their arrival in the United States.

This is the first investigation we are aware of to examine and identify risk factors for lead poisoning among US-bound refugee children living in camps overseas, before their arrival in the United States. (Read the full article)

Studies of the association between process and outcome measures of the quality of acute asthma care for children have been mixed. These studies are limited by small, single-institution settings or by examining the association at the aggregate level.

This first multicenter analysis of the process-outcome association in acute asthma care for children revealed no association. Because the validity of process measures depends on association with outcomes, further study is needed before implementing existing process measures as performance metrics. (Read the full article)

Traumatic brain injury in school-aged children is associated with intellectual, behavioral, and social deficits. Research into outcomes of children injured before 3 years of age is limited despite data suggesting a high incidence of injury in this age group.

Results show that a moderate to severe traumatic brain injury before 3 years of age is associated with lowered cognitive function. Furthermore, this study highlights the link between social disadvantage and poor outcomes after traumatic brain injury in early childhood. (Read the full article)

Previous research has demonstrated that young children with traumatic brain injury are at elevated risk of poor outcomes, particularly following severe injuries. These deficits persist until at least 5 years postinsult. Factors predicting outcomes in this age group have not been established.

This study follows survivors of very early traumatic brain injury into adolescence. Results indicate that severe injury is associated with poorest outcome, but after 3 years, the gap between children with severe traumatic brain injury and peers stabilizes. (Read the full article)

Epilepsy/seizure disorder is known to be associated with a range of mental health and neurodevelopmental comorbidities, based on clinical studies, and on population studies largely conducted outside the United States.

In a nationally representative sample of US children, estimated prevalence of reported lifetime epilepsy/seizure disorder was 1%, and of current epilepsy/seizure disorder was 6.3/1000. Developmental, mental health, and physical comorbidities are common, warranting enhanced surveillance, and an integrated service approach. (Read the full article)

Although follow-up examinations are recommended for suspected victims of sexual abuse or assault, little is known about the potential benefits of a second examination with regard to diagnosing trauma or sexually transmitted infections.

In ~23% of pediatric patients evaluated for sexual abuse or assault, a second examination by a specialist changed the interpretation of trauma likelihood or results in the detection of a sexually transmitted infection. (Read the full article)

The standard initial management for infants and children with acute pyelonephritis is intravenous antibiotic treatment.

Our results support the use of an oral cefixime treatment of initial episodes of acute pyelonephritis involving a gram-negative bacteria strain in children aged 1 month to 3 years who are without urological abnormalities and without clinical hemodynamic impairment. (Read the full article)

Limited data exist about the frequency and incidence of serious injuries due to physical abuse of children. Data from Child Protective Services, which are published yearly, do not have information about severity.

This is the first study to provide US estimates on the occurrence of serious injuries due to physical abuse. The incidence was highest in infants on Medicaid. Such data can be used to track changes due to prevention. (Read the full article)

There are a number of effective interventions designed to prevent childhood/adolescent depression. Such interventions tend to comprise screening and the subsequent provision of psychological therapy. However, the cost-effectiveness of routinely providing such interventions at a population level is not known.

By using economic modeling techniques, this study shows that the population cost-effectiveness of such preventive interventions for childhood/adolescent depression is very favorable, although implementation issues, particularly around the acceptability to providers, need to be addressed before widespread adoption. (Read the full article)

Children undergoing stem cell transplantation are thought to be at risk for increased distress, adjustment difficulties, and impaired health-related quality of life. Few interventions to improve adjustment and quality-of-life outcomes in this setting have been tested.

The excellent outcomes observed in all patient groups, including controls, may be a result of improvements in standard supportive care. Stem cell transplantation may not be as demanding as previously thought to be, and children undergoing this procedure appear resilient to the challenge. (Read the full article)

The evidence base for obesity prevention is extremely limited. Although minority youth are at higher risk of obesity, and early childhood is a critical period for prevention, only 1 program has demonstrated sustained effects on obesity in young minority children.

Among youth at high risk for obesity based on income, minority status, and child behavior problems, early intervention that promotes effective parenting led to meaningful differences in obesity in preadolescence. Early family intervention is an innovative and promising approach. (Read the full article)

The social and emotional burdens of ostracism are well known, but few studies have tested whether ostracism adversely alters physical activity behaviors that may result in maintenance of childhood obesity.

This is the first study to experimentally assess the effect of simulated ostracism, or social exclusion, on physical activity behavior in children. Ostracism reduced accelerometer counts by 22% and increased time allocated to sedentary behaviors by 41%. (Read the full article)

Bronchiolitis is the most common cause for hospital admission in patients aged <1 year. Hypoxia is a common reason for admission. Despite a multitude of studies looking at various treatment strategies, no clear benefit has been found.

With oxygen therapy being the main therapeutic option, home oxygen offers a novel way to manage bronchiolitis. This study shows that home oxygen is a safe and effective way to decrease hospital admissions in a select group of patients. (Read the full article)

Although China has the largest birth population in the world and a number of multicenter studies of neonatal respiratory failure are reported, there is a paucity of data regarding outcome measurement of very premature neonates requiring respiratory care and surfactant therapy.

This study is the largest survey, to date, in a Chinese network of 55 NICUs that presents the incidence, morbidity, and mortality rates, with risk factors of neonatal respiratory failure, with special emphasis on surfactant-treated very immature infants. (Read the full article)

Neglect cases in Child Protective Services often receive home-based interventions, but their success in preventing maltreatment recidivism has been elusive. Structured, behavioral skills models, such as SafeCare, are promising but have not been tested in full-scale implementation trials.

This cluster trial experiment demonstrates significant maltreatment recidivism reduction due to implementing the SafeCare model in a fully scaled-up statewide system. The findings support adopting the SafeCare model for these types of services. (Read the full article)

Childhood gender nonconformity has been associated with poorer relationships with parents, but it is unknown if childhood gender nonconformity is associated with childhood abuse or with posttraumatic stress disorder.

We identify gender nonconformity before age 11 years as a risk indicator for physical, sexual, and psychological abuse in childhood and lifetime probable posttraumatic stress disorder in youth. (Read the full article)

Community-acquired pneumonia (CAP) is a common pediatric illness caused by Streptococcus pneumoniae. New pediatric Infectious Diseases Society of America CAP guidelines are now available recommending ampicillin as empirical treatment of children hospitalized with uncomplicated CAP.

This study found that a CAP guideline led to an increase in the narrow-spectrum antibiotic ampicillin. Additionally, an increase in the use of amoxicillin at discharge was observed. Furthermore, change in therapy did not lead to increased adverse outcomes. (Read the full article)

The number of individuals diagnosed with autism spectrum disorders (ASDs) continues to increase in the United States and other developed countries. Most prevalence estimates indicate that ASD is diagnosed less commonly in Hispanic individuals compared with non-Hispanic (NH) white populations.

Prevalence of ASD in Arizona’s population-based cohort is higher than reported previously. Prevalence in the Hispanic population and NH white population increased significantly over time, with a significant decrease in the gap between Hispanic and NH white prevalence. (Read the full article)

Studies in the Netherlands show that pubertal blockade at Tanner 2/3 prevents unwanted sex characteristics and improves psychological functioning. Endocrine Society guidelines (2009) recommend pubertal suppression for adolescents with gender identity disorder until approximately age 16.

This is the first study of a US cohort of children and adolescents with gender identity disorder. Patients were referred for medical treatment to a pediatric center that supports a multidisciplinary Gender Management Service. (Read the full article)

General measures discourage all self-referrals to the emergency department. For adults, self-referral to the emergency department has been associated with nonsevere disease, whereas severity of illness of self-referred children is still unknown.

One in four parents properly judged and acted on their febrile child’s illness by presentation to the emergency department on their own initiative. Measures to discourage parents from self-referral may potentially result in delayed or missed diagnoses. (Read the full article)

Children with special health care needs present clinically with varied functional difficulties across an array of health conditions. Little attention has been given to the interaction of these descriptors at a population level, thereby not addressing the complexity of functional difficulties and their impact on the health of CSHCN.

The data demonstrate the relationships among functional difficulties and health conditions, which then improve our understanding of CSHCN and their needs. Functional difficulties contribute significantly to outcomes, such as emergency room visits, parental work patterns, and limitations in daily activities, and have implications for practice, training, policy, and research. (Read the full article)

Rare diseases in childhood can be debilitating and require lifelong care. Since 1983, the Orphan Drug Act incentives have stimulated the development and significantly improved the availability of treatment products for patients with rare diseases.

We report an increasing pediatric orphan product designations and approvals from 2000 to 2009. The trend indicates that the Orphan Drug Act has continued to address this important unmet need. (Read the full article)

Very preterm children are at risk for developmental problems and, therefore, a systematic follow-up is important. However, the relevance of early follow-up of cognitive development has been questioned because of the divergent data on the prognostic value of early measures.

Good stability of cognitive development was found between the ages of 2 and 5 years. Well-conducted assessment of cognitive development in infancy is both reliable to anticipate later development and clinically valuable to identify those children who need developmental support. (Read the full article)

Active video games can enable children under laboratory conditions to participate in moderate, and even vigorous, physical activity. There are inconsistencies in the literature, however, about whether active video games enable children to increase physical activity under more naturalistic circumstances.

This study tests whether children receiving a new active video game spontaneously engaged in more physical activity, and whether commercially available active video games have a public health benefit. No additional physical activity was detected, suggesting no public health benefit. (Read the full article)

Few studies have examined the reliability of clinical findings in pediatric appendicitis. Clinical prediction rules are most useful if the included variables are reliable across practice settings and practitioners.

Among children who present with possible appendicitis, the interrater reliability varied considerably for patient history and physical examination variables. Those variables with the highest degree of reliability may be best suited for inclusion in appendicitis clinical prediction rules. (Read the full article)

Previous studies have identified barriers to providing optimal pediatric palliative care, including general communication issues between clinicians and family members. However, there is a paucity of data regarding the barriers specifically relating to advance care discussions.

This study identifies significant barriers to advance care discussions for children with life-threatening conditions. Clinicians perceive parental issues as the most common impediments to these discussions. Furthermore, providers believe that advance care discussions happen too late in the course of illness. (Read the full article)

Pneumonia is still a significant problem in young children from developing countries where zinc deficiency is prevalent. Although zinc supplementation reduces the risk of childhood pneumonia, the effect of adjunct zinc on severe pneumonia is unclear with conflicting results.

The overall effect, if any, of zinc as adjuvant therapy for World Health Organization–defined severe pneumonia in young children is small. (Read the full article)

Stairs are a common source of injury to children. Most injuries are minor soft tissue injuries, with the head and neck region being injured most commonly.

This is the first nationally representative study of stair-related injuries to young children in the United States. A child aged <5 years is treated in a US emergency department, on average, every 6 minutes for a stair-related injury. (Read the full article)

For children and young people with life-limiting conditions, palliative care services should be available, but few national or local data are available to estimate the burden of these conditions.

The prevalence of life-limiting conditions in children and young people in England was double the previously reported estimates, at 32 per 10 000 population. This identifies a need for specialist pediatric palliative care services. (Read the full article)

Previous research on the cost of childhood autism has been restricted primarily to studying direct costs (money outlays) incurred by publicly and privately funded service systems.

This study estimates the economic impact on the family and examines indirect costs to families in the form of parental labor market productivity losses. (Read the full article)

In the prerotavirus vaccine era, diarrhea-associated hospitalization and outpatient rates among American Indian and Alaska Native children were higher than those among the general US population. Routine rotavirus vaccination has dramatically decreased rotavirus diarrhea burden in the general US population.

Decreases in diarrhea-associated hospitalization and outpatient rates among American Indian and Alaska Native children in postvaccine years were observed in all Indian Health Service regions, with declines greater in each subsequent year after vaccine introduction. (Read the full article)

Prenatal methamphetamine exposure has been related to deficits in fetal growth, changes in infant neurobehavior, and fine motor deficits, but little is known about its developmental effects on behavior problems in early childhood.

This is the first prospective study to identify behavior problems associated with prenatal methamphetamine exposure. Mood difficulties and acting-out behavior are increased in exposed children by age 3 years. Early identification and intervention may prevent escalation into delinquency and psychopathology. (Read the full article)

Healthcare Effectiveness Data and Information Set (HEDIS) measures are widely used to assess the reliability of pediatric immunization delivery. The extent to which these measures provide accurate ("is this child up-to-date on immunizations?") and useful ("is this child due for catch-up immunizations?") information is unclear.

Overall, HEDIS childhood immunization measures are accurate and useful. Users of HEDIS data should be aware, however, that certain immunizations (eg, hepatitis B, pneumococcal conjugate) and children (eg, those with a single overdue immunization) are more prone to HEDIS misclassification. (Read the full article)

Cross-sectional studies have shown an increased risk of mental health difficulties in children with developmental coordination disorder. However, there has been limited longitudinal research in this area controlling for confounding factors and assessing the role of potential mediators.

Children with "probable" developmental coordination disorder at 7 years had a significantly increased risk mental health difficulties at 10 years. Protective factors for self-reported depression included high IQ, high self-esteem, good social communication skills, and the absence of bullying. (Read the full article)

Febrile seizure risk 7 to 10 days after measles-mumps-rubella-varicella (MMRV) is double that of separate measles-mumps-rubella (MMR) and varicella vaccines among 1-year-olds. Whether MMRV or MMR and varicella affect febrile seizure risk among 4- to 6-year-olds has not been reported.

Using Vaccine Safety Datalink data, we examined risk for febrile seizures after measles-containing vaccines. This study provides reassurance that MMRV and separately administered MMR and varicella were not associated with increased risk of febrile seizures among 4- to 6-year-olds. (Read the full article)

Subjects born preterm have higher blood pressure (BP) in childhood and adolescence. Little is known about at what age the deviation from normal BP starts, and data are especially scarce for the new generation of survivors after extremely preterm birth.

In a population-based study, we found that BP was higher in 2.5-year-old children born extremely preterm compared with controls. This finding might have implications for follow-up programs after preterm birth, with the goal of improving later cardiovascular health. (Read the full article)

Nearly one-third of all US children are overweight or obese, with even higher prevalence among Mexican American children. Overweight and obesity increase systemic inflammation, contributing to increased risk for chronic diseases, such as type 2 diabetes mellitus and cardiovascular disease.

Obese Mexican American children had concurrent alterations in both inflammatory markers and traditional disease risk markers, relative to healthy weight children. Our results provide evidence partially explaining the health disparity for disease in Mexican American children who are overweight/obese. (Read the full article)

The presence of malodorous urine is often mentioned as one of the clinical manifestations of urinary tract infection (UTI) in young children, yet the few studies looking at this symptom are contradictory.

Our study demonstrates that malodorous urine as reported by parents increases the likelihood of UTI among young children evaluated for suspected UTI. However, this association is not strong enough to definitely rule in or out a diagnosis of UTI. (Read the full article)

Autism is widely considered a heterogeneous disorder in terms of etiology and phenotype. Although autism is usually a lifelong disorder, little is known about the rate or timing of how children develop regarding their communication and social functioning.

Utilizing annual evaluations for a large population of children with autism, we describe the 6 most common trajectories from diagnosis through age 14 years. Trajectories revealed considerable variation, and high socioeconomic status children were more likely to experience rapid improvement. (Read the full article)