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The number of febrile neutropenic episodes was lower, and the time until the first episode was longer in patients with normal MBL level than in patients with low MBL level coding genotypes. The MBL-MASP2 complex activation level correlated with the MBL genotype and decreased significantly during infections in patients with low MBL level. Our results suggest that infections after immunosuppression therapy in children suffering from hemato-oncologic diseases are associated with the MBL2 genotype. Our results may contribute to the estimation of risk for infections in the future, which may modify therapeutic options for individuals.<br />Age-dependent differences in clinical presentation and viral loads in infants and young children with respiratory syncytial virus (RSV) infection, and their correlation with disease severity are poorly defined.<br />Previously healthy children &lt;2 years old with mild (outpatients) and severe (inpatients) RSV infection were enrolled and viral loads measured by polymerase chain reaction in nasopharyngeal swabs. Patients were stratified by age in 0-&lt;3, 3-6 and &gt;6-24 months, and multivariable analyses were performed to identify clinical and viral factors associated with severe disease.<br />From 2014 to 2018, we enrolled 534 children with RSV infection, 130 outpatients with mild RSV infection and 404 inpatients with severe RSV disease. Median duration of illness was 4 days for both groups, yet viral loads were higher in outpatients than in inpatients (P &lt; 0.001). In bivariate analyses, wheezing was more frequent in outpatients of older age (&gt;3 months) than in inpatients (P &lt; 0.01), while fever was more common in inpatients than outpatients (P &lt; 0.01) and its frequency increased with age. Adjusted analyses confirmed that increased work of breathing and fever were consistently associated with hospitalization irrespective of age, while wheezing in infants &gt;3 months, and higher RSV loads in children &gt;6-24 months were independently associated with reduced disease severity.<br />Age had a significant impact defining the interactions among viral loads, specific clinical manifestations and disease severity in children with RSV infection. These observations highlight the importance of patient stratification when evaluating interventions against RSV.<br />Age had a significant impact defining the interactions among viral loads, specific clinical manifestations and disease severity in children with RSV infection. These observations highlight the importance of patient stratification when evaluating interventions against RSV.<br />Clinical knowledge of human adenovirus type 7 (HAdV-7) pneumonia in children remains limited. Moreover, predictors for disease severity are largely unknown.<br />This is a retrospective study of children hospitalized at Liuzhou Maternal and Child Health Hospital, China, with HAdV-7 pneumonia in 2018-2019. Demographics, clinical characteristics, laboratory results, and imaging data were collected. HAdV-7 was identified in plasma using whole genome sequencing, which yielded quantitative HAdV-7 sequence numbers.<br />There were 204 children; 145 (71%) were &lt;2 years of age. There were 68 children with severe pneumonia (SP) and 136 with nonsevere pneumonia (NSP). Up to 43% in SP group with respiratory failure (SP-RF) were &lt;12 months of age. [https://www.selleckchem.com/products/abt-199.html https://www.selleckchem.com/products/abt-199.html] Median duration of fever before hospitalization was shorter in NSP group than SP groups (P &lt; 0.01). Fourteen (6.9%) underwent mechanical ventilation. There was a significant difference in mean plasma HAdV-7 sequence numbers among SP-RF, SP without respiratory failure (SP-Nlasma HAdV-7 sequence numbers have a potential in predicting severity of HAdV-7 pneumonia in children.<br />Despite the evolving recommendations that favor the use of intraosseous access in pediatric resuscitation, the impact of vascular access type on survival in young children has not been demonstrated. The aim of this study was to assess the impact of the intravascular injection route on the return on spontaneous circulation, survival to hospital admission (0 day), and 30 days or survival to hospital discharge, by comparing survival rates in young children having intraosseous and peripheral IV access. The second aim was to compare the rates of favorable neurologic outcome after 30 days or survival to hospital discharge.<br />This was a multicenter retrospective comparative study between July 2011 and October 2018.<br />Based on the French cardiac arrest registry data.<br />All prepubescent (males &lt; 12 yr old, females &lt; 10 yr old) victims of an out-of-hospital cardiac arrest.<br />Patients with adrenaline administration by intraosseous versus peripheral venous technique were compared, using propensity score matching.ons of propensity matching limit a definitive conclusion.<br />The type of injection route (intraosseous or peripheral venous access) does not appear to have an impact on survival of out-of-hospital cardiac arrest in a prepubescent population, but limitations of propensity matching limit a definitive conclusion.<br />Hereditary hemochromatosis can cause individuals to absorb too much iron from their diet. Higher tissue iron content, below the threshold of toxicity, may enhance oxygen carrying capacity and offer a competitive advantage. Single nucleotide polymorphisms (SNP) in the homeostatic iron regulator (HFE) gene have been shown to modify iron metabolism and can be used to predict an individual's risk of hemochromatosis. Several studies have shown that HFE genotypes are associated with elite endurance athlete status; however, no studies have examined whether HFE genotypes are associated with endurance performance.<br />The objectives of this study were to determine whether there was an association between HFE risk genotypes (rs1800562 and rs1799945) and endurance performance in a 10-km cycling time trial as well as maximal oxygen uptake (V˙O2peak), an indicator of aerobic capacity.<br />Competitive male athletes (n = 100; age = 25 ± 4 yr) completed a 10-km cycling time trial. DNA was isolated from saliva and genotyped for the rs1800562 (C282Y) and rs1799945 (H63D) SNP in HFE. Athletes were classified as low risk (n = 88) or medium/high risk (n = 11) based on their HFE genotype for both SNP using an algorithm. ANCOVA was conducted to compare outcome variables between both groups.<br />Individuals with the medium- or high-risk genotype were ~8% (1.3 min) faster than those with the low-risk genotype (17.0 ± 0.8 vs 18.3 ± 0.3 min, P = 0.05). V˙O2peak was ~17% (7.9 mL·kg-1⋅min-1) higher in individuals with the medium- or high-risk genotype compared with those with the low-risk genotype (54.6 ± 3.2 vs 46.7 ± 1.0 mL·kg-1⋅min-1, P = 0.003).<br />Our findings show that HFE risk genotypes are associated with improved endurance performance and increased V˙O2peak in male athletes.<br />Our findings show that HFE risk genotypes are associated with improved endurance performance and increased V˙O2peak in male athletes.