
Seroprevalence of Pertussis Among Healthy Children and Adolescents in Kazakhstan
PertussisSeroprevalence of pertussis among older children and adolescents in Kazakhstan: A cross sectional study. Justification: to describe the distribution of anti-pertussis toxin (PT) antibodies (IgA and IgG) in a population aged 10-18 years old according to sociodemographic characteristics, vaccination history, and risk factors of pertussis infection.

DNA Damage and Oxidative Stress in Hospitalized COVID-19 Patients
Covid19The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the coronavirus disease 2019 (COVID-19) pandemic challenging health systems worldwide. While there is a clear correlation between oxidative stress markers and the severity of many viral diseases such as hepatitis C, for SARS-CoV clinical data is limited. The investigators aim at 1.) investigating DNA damage, oxidative stress, inflammation, and aging markers in COVID-19 patients and compare them with age and gender matched healthy controls and patients with influenza; and 2.) investigating all aforementioned parameters during "cytokine storm" via repeated blood sampling.

COVID-19 Infection and Epithelial Cell Markers
AsthmaCovid19To assess if TSLP expression by airway epithelial cells following COVID-19 infection regulates viral load and disease severity.

Intensive Care Unit Acquired Infections in Patients Colonized With Extended Spectrum Enterobacteriaceae...
Ventilator Associated PneumoniaBacteremia2 moreWorldwide emergence of extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) had become a major problem in ICU, with at least 10% of incidence at the admission in Europe. A systematic rectal swab is used in 70% of French ICU to detect intestinal ESBL-E carriage The relationship between intestinal carriage and ICU-acquired infection is not perfectly known. The investigators conducted a five years study monocentric retrospective observational cohort in patients with presence of extended-spectrum β-lactamase-producing Enterobacteriaceae in systematic rectal swabs to investigate which type of infections and which bacteria are involved. The investigators also collect data about antibiotherapy used to treat these infections.

National Survey of Mental Health After COVID-19 Outbreak
Mental Health ImpairmentThe Serbian national survey - acronym CoV2Soul.RS - has been launched to document mental health (MH) status and understand needs of the population in relation to the prolonged global public health crisis. This cross-sectional study will collect a representative national sample (18-65 years) by multi-stage probabilistic household sampling method. Trained staff will conduct face-to-face diagnostic interviews (M.I.N.I.). Battery of self-report instruments will be used to measure quality of Life (QoL), level of distress, and associated protective and harmful psychological and societal factors. The investigators aim to assess prevalence rates of MH disorders and associated QoL in the nationally representative sample, to explore how MH conditions and QoL vary with respect to socio-demographic variables, personality, health status and traumatic events during pandemics, and to find how these relationships depend on societal factors characterising municipalities in which they live. Moreover, this study will address perception of pandemic consequences and associated distress in relation to personality and different types of possible mediators. The prevalence rates of MH disorders will be calculated as percentages of participants with a positive diagnosis. The hierarchical structure of the data will be analyzed using Multilevel Random Coefficient Modeling, CoV2Soul.RS will contribute to an international evidence base about prevalence rates of psychiatric conditions during different phases of the pandemic in different regions and will identify protective and harmful psychological and societal factors for MH and QoL.

Screening Strategy for Early Diagnosis of Silicosis in At-Risk Populations in Oklahoma
SilicosisPneumoconiosis; SilicaSilicosis, a preventable yet irreversible occupational lung disease, has an insidious onset with a latency period for diagnosis extending beyond 10 years from the initial exposure. The central hypothesis of this study is that silicosis cases may currently be going undetected. The long-term goal of this research is to determine the current prevalence and forecast the future prevalence of silicosis and other pneumoconiosis among working populations in Oklahoma and to assist the public health and the healthcare system in planning for a potential resurgence of silicosis.

Comparison of Biologicals in Treatment of Severe Asthma
AsthmaThis is a retrospective clinical study on adult patients (18 years or more) with biological therapy for severe asthma at the Helsinki University Central Hospital (HUCH). This is a real-life study with a broader patient population than in a randomized controlled trial. Omalizumab has been used for treatment of asthma in HUCH since January 2009, anti-IL5 therapies starting with mepolizumab since April 2016.

Investigation of Compliance With Ventilator-Associated Pneumonia Prevention Methods and Incidence...
The Incidence of Ventilator-associated Pneumonia and Rate of Compliance With Survey CriteriaVentilator-associated Pneumonia (VAP) is a high-mortality hospital infection that occurs in patients undergoing invasive Mechanical Ventilation (MV) and is frequently encountered in intensive care units. Prolonged mechanical ventilation, prolonged hospitalizations, excessive use of antibiotics and increased medical costs are seen. Therefore, compliance with ventilator-associated pneumonia prevention methods is becoming increasingly important. Therefore, in the investigator's study was to investigate compliance with ventilator-associated pneumonia prevention methods and the incidence of ventilator-associated pneumonia in intensive care units.

Study on the Correlation Between TCM Syndrome, Inflammatory Phenotype and Biomarker of Bronchial...
Bronchial AsthmaThis study aims to determine the TCM syndrome pattern and the distribution of inflammation phenotype in different stages of bronchial asthma; to explore the correlation between TCM syndrome and inflammation phenotype. Secondly screening biomarkers that can be recognized by TCM syndromes and inflammatory phenotypes of bronchial asthma, and provide a basis for individualized diagnosis and treatment of diseases.

Predictors of Intracranial Hemorrhage in ARDS Patients on ECMO
ARDSHuman1 moreIntracranial hemorrhage is is a rare, but critical incident in patients with acute lung failure undergoing ECMO therapy. Predictors of intracranial hemorrhage are yet to be defined to identify patients at (high) risk. This retrospective analysis investigates the predictive value and validity of parameters and specific risk factors of critically ill ARDS patients treated with ECMO.