Adolescents With Breakthrough COVID-19 Infections Requiring Hospitalization: A Multicenter Retrospective Study.

Background Vaccines have the most important role in the battle against the COVID-19 pandemic. With the widespread use of vaccines, COVID-19 has remarkably declined. Adolescents were vaccinated after approvals for this age group, which was later than adults, and a nationwide vaccination program was implemented in August 2021 in Turkey for adolescents ≥12 years of age.

Factors Affecting the Implementation and Acceptance of the Cocoon Strategy in the NICU in a Tertiary Center in Türkiye.

Pertussis is an important cause of mortality and morbidity in infancy. It is recommended that close contacts of the baby be vaccinated with Tdap, and this practice is called the cocoon strategy. This study aimed to investigate the applicability of the cocoon strategy and to determine the factors affecting the process.

Emerging importance of multidrug-resistant Stenotrophomonas maltophilia infections in neonatal intensive care unit in a tertiary center in Turkey.

Objective: Stenotrophomonas maltophilia is an emerging multi-drug resistant, opportunistic pathogen in the neonatal intensive care unit (NICU). In this study, we aimed to assess the incidence, clinical features, antibiotic susceptibility, and treatment options of S. maltophilia infection among the healthcare-associated infections (HAIs) in the neonatal unit.

The Role of Adenovirus in Hepatitis of Unknown Etiology Among Children in Turkey, July 2022 to January 2023.

Background: In the first half of 2022, the increase in cases of severe acute hepatitis in children with no epidemiological link and unknown cause has aroused concern worldwide. In this study, we aimed to determine the frequency of adenovirus in children with hepatitis of unknown origin in Turkey.

Methods: In this study, which was conducted with the participation of 16 centers from Turkey, between July 2022 and January 2023, 36 pediatric patients under the age of 18 who met the definition of acute hepatitis were included.

[Analysis of IFN-γR1 (CD119) and IL-12Rβ1 (CD212) Deficiency by Flow Cytometry].

Mendelian susceptibility to mycobacterial diseases (MSMD) is a rare primary immune deficiency (PID). IL-12Rβ1 deficiency is the most frequently observed of more than 16 genetic defects that have been identified for MSMD. Genetic and immunological tests are remarkable in the diagnosis of PID.

[Long COVID in Children: A Pediatric Center Experience].

Although COVID-19 (Coronavirus disease-2019) is observed to be milder in children, it has been observed that the symptoms continue for a long time in many people after the acute period of the disease, especially the multisystemic inflammatory syndrome (MISC) that developed after COVID-19 with the progression of the pandemic. Although it was first defined by different names such as long COVID and post COVID in adults, it has been observed in studies that similar complaints such as cough, fatigue and difficulty in concentrating continue for a long time in children, just as in adults. In our study, we aimed to evaluate the status of long COVID in childhood.

Evaluation of vaccination status of health care workers for recommended vaccines and their acceptance of SARS-CoV-2 vaccines.

Introduction: Health care workers (HCWs) are disproportionately exposed to infectious diseases and play a role in nosocomial transmission, making them a key demographic for vaccination. HCW vaccination rates are not optimal in many countries; hence, compulsory vaccination policies have been implemented in some countries. Although these policies are effective and necessary under certain conditions, resolving HCWs' hesitancies and misconceptions about vaccines is crucial.

Humoral response and safety of BNT162b2 mRNA vaccine in children with rheumatic diseases.

Objectives: The coronavirus disease 2019 (COVID-19) vaccine represents a cornerstone in tackling the pandemic and with the approval of the BNT162b2 mRNA vaccine in December 2020, it has become a beacon of hope for people around the world, including children. This study aimed to present the data on the humoral response and safety of vaccine in a cohort of patients with paediatric rheumatic diseases receiving immunomodulatory treatments.

Methods: Forty-one children with paediatric rheumatic diseases were included and were vaccinated with the BNT162b2 mRNA vaccine (two doses of 30 µg administered 3-4 weeks apart).

COVID-19 associated multisystemic inflammatory syndrome in 614 children with and without overlap with Kawasaki disease-Turk MIS-C study group.

Unlabelled: Multisystemic inflammatory syndrome (MIS-C) diagnosis remains difficult because the clinical features overlap with Kawasaki disease (KD). The study aims to highlight the clinical and laboratory features and outcomes of patients with MISC whose clinical manifestations overlap with or without KD. This study is a retrospective analysis of a case series designed for patients aged 1 month to 18 years in 28 hospitals between November 1, 2020, and June 9, 2021.

A Child Abuse: Marriage at Childhood Age.

Child marriage, which is seen as both a global public health and social problem, is defined as marriage before the age of 18 years. Gender inequality, migration and wars, economic problems, lack of education, and non-deterrent laws are the main causes of child marriage. Child marriage in our country, and other places where child marriage is still commonplace, is a breach of the widely recognized human rights of the child.

Multisystem inflammatory syndrome in children.

As the COVID-19 pandemic continues, children can be infected with the virus that causes COVID-19. Clinical symptoms of children with COVID from China, where the disease was first reported, generally were less severe than adults. However, at the end of April 2020 in Europe, it was observed that some children with SARS-CoV-2 infection developed fever, abdominal pain, shock, myocardial insufficiency and they needed to be taken care of in intensive care unit.

SARS-CoV-2 seropositivity among pediatric health care personnel after the first peak of the pandemic: nationwide surveillance in Turkey.

Background: Understanding SARS-CoV-2 seroprevalence among health care personnel is important to explore risk factors for transmission, develop elimination strategies and form a view on the necessity and frequency of surveillance in the future.

Methods: We enrolled 4927 health care personnel working in pediatric units at 32 hospitals from 7 different regions of Turkey in a study to determine SARS Co-V-2 seroprevalence after the first peak of the COVID-19 pandemic. A point of care serologic lateral flow rapid test kit for immunoglobulin (Ig)M/IgG was used.

Correlation of laboratory parameters and Chest CT findings in young adults with COVID-19 and comparison of imaging findings with children.

Purpose: We aimed to compare COVID-19 imaging findings of young adults (19-35 years of age) with those of children (0-18 years) and to correlate imaging findings of young adults with their laboratory tests.

Materials And Methods: This retrospective study included Real Time-Polymerase Chain Reaction (RT-PCR) confirmed 130 young adults (mean age: 28.39 ± 4.

Progressive Multifocal Leukoencephalopathy in Children with Primary and Secondary Immune Deficiency.

Progressive multifocal leukoencephalopathy (PML) is a fatal demyelinating disease of the central nervous system that is caused by John Cunningham virus (JCV). It occurs almost exclusively in immunosuppressed individuals, for example, patients with AIDS and hematological and lymphoreticular malignancies. In this article, we present a review of the literature and 2 case reports with PML.

Nailfold capillaroscopy: A sensitive method for evaluating microvascular involvement in children with SARS-CoV-2 infection.

Objectives: The hyperinflammatory state and the viral invasion may result in endothelial dysfunction in SARS-CoV-2 infection. Although a method foreseeing microvascular dysfunction has not been defined yet, studies conducted in patients diagnosed with COVID-19 have demonstrated the presence of endotheliitis. With this study, we aimed to investigate the microvascular circulation in patients diagnosed with COVID-19 and multisystem inflammatory syndrome in children (MIS-C) by nailfold videocapillaroscopy (NVC).

Plasma D-dimer : a promising indicator of COVID-19 infection severity or only an acute phase reactant.

Objective: Serum D-dimer levels, as well as other biomarkers related to coagulation, are significantly elevated during severe community acquired pneumonia. The aim of this study is to investigate the utility of plasma D-dimer levels determining the severity of inflammation and prognosis in pediatric patients with COVID-19 infection.

Methods: We retrospectively chart reviewed medical records of pediatric patients (< 18 years of age) admitted to Istanbul Fcaulty of Medicine, Department of Pediatrics Infectious Disease Service between March 11, and June 30, 2020.

Multicenter prospective surveillance study of viral agents causing meningoencephalitis.

The frequency of bacterial factors causing central nervous system infections has decreased as a result of the development of our national immunization program. In this study, it is aimed to obtain the data of our local surveillance by defining the viral etiology in cases diagnosed with meningoencephalitis for 1 year. Previously healhty 186 children, who applied with findings suggesting viral meningoencephalitis to 8 different tertiary health centers between August 2018 and August 2019, in Istanbul, were included.

LRBA deficiency: a rare cause of type 1 diabetes, colitis, and severe immunodeficiency.

The biological role of the lipopolysaccharide-responsive beige-like anchor (LRBA) protein associated with the immune system is not to date well known. However, it is thought to regulate the CTLA4 protein, an inhibitory immunoreceptor. Chronic diarrhea, autoimmune disorders, organomegaly, frequent recurrent infections, hypogammaglobulinemia, chronic lung manifestations, and growth retardation are some features of LRBA deficiency.

Imaging Features of Pediatric COVID-19 on Chest Radiography and Chest CT: A Retrospective, Single-Center Study.

Rationale And Objectives: This study aims to reveal the imaging features of Coronavirus Disease 2019 (COVID-19) in children.

Materials And Methods: Sixty-nine chest radiographs and 37 chest CT examinations of 74 children (36 male; median (interquartile range) age:11 (6.25-15) years, 38 female; median (interquartile range) age: 12 (5.