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• W2433990787 abstract "To investigate human coronaviruses (HCoVs) infection in children with acute lower respiratory tract infection(ALRTI)and to explore the clinical features of ALRTI caused by HCoVs in children.Totally 4 371 children with clinical diagnosis of ALRTI during the period from March 2007 to February 2015 seen in Beijing Children's Hospital were recruited into this study. Patients were divided into 4 groups by age, including 1 890 cases in < 1 year group, 788 cases in 1-3 years group, 553 cases in 3-6 years group, 1140 cases in ≥6 years group. One nasopharyngeal aspirate specimen was collected from each patient. RT-PCR methods were applied to detect 9 common respiratory viruses including HCoVs (including HCoV-OC43, HCoV-229E, HCoV-NL63 and HCoV-HKU1), respiratory syncytial virus (RSV) and so on. Clinical features of ALRTI with single HCoVs infection were analyzed and compared with hospitalized ALRTI cases with single RSV infection in the same period.(1) Totally 2 895 cases were positive for at least one virus in this study in 4 371 ALRTI patients (positive rate 66.23%), in which 147 cases were positive for HCoVs infection (positive rate 3.36%). (2) Positive rates of HCoVs in each year from 2007 to 2014 were 6.11%, 3.79%, 4.69%, 4.31%, 2.38% 2.10%, 0.77% and 2.65%, respectively. The mean positive rates of HCoVs for each month from January to December were 2.53%, 2.12%, 3.63%, 6.68%, 1.53%, 3.77%, 3.92%, 3.00%, 2.15%, 5.26%, 3.01% and 2.80%. (3) Detection results of each subtypes of HCoVs in total 4 371 pediatric ALRTI patients were: 48 cases positive for HCoV-OC43(1.10%), 32 cases positive for HCoV-229E(0.73%), 25 cases positive for HCoV-NL63 (0.57%), 27 cases positive for HCoV-HKU1 (0.62%). (4) Positive rates of HCoVs infection in <1 year group, 1-3 years group, 3-6 years group and ≥ 6 years group were 4.13%, 5.08%, 2.71% and 1.23%, respectively. There were significant differences in positive rates of HCoV among groups (χ² = 27.218, P<0.01). (5) There were 16 hospitalized cases with single infection of HCoVs in this study, of which 12 cases were diagnosed as bronchopneumonia, 3 cases developed acute laryngeal obstruction, 2 cases had acute bronchial asthma attack. Common clinical manifestations included cough (14 cases), gasping (13 cases), dyspnea (9 cases), fever (6 cases), hoarseness (4 cases), laryngeal stridor (4 cases) and abnormality on chest X-ray (including fuzzy lung texture, patchy shadow and consolidation) (12 cases). (6) There were no significant differences in the incidence of clinical manifestations (including cough, gasping, dyspnea, fever and abnormality on chest X-ray), complications (including respiratory failure, myocardial damage, and acute bronchial asthma attack) and mechanical ventilation between hospitalized ALRTI patients with single HCoV infection and 193 patients with single RSV infection in the same period.HCoVs are pathogens of ALRTI in children, The overall positive rate of HCoVs was 3.36% in this study. The clinical manifestations and severity of ALRTI caused by single HCoVs was comparable to that of ALRTI with single RSV infection in children." @default.
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• W2433990787 date "2015-09-01" @default.
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• W2433990787 title "[Detection and clinical analysis of acute lower respiratory tract infection with human coronaviruses in children in Beijing area 2007-2015]." @default.
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