Cet article est une Preprint
Les preprints sont des rapports de recherche préliminaires qui n'ont pas été certifiés par l’évaluation par les pairs. Ils ne devraient pas être considérés comme guidant la pratique clinique ou les comportements liés à la santé et ne devraient pas être rapportés dans les médias comme des informations établies.
Les preprints publiées en ligne permettent aux auteurs de recevoir des commentaires rapidement, et toute la communauté scientifique peut évaluer indépendamment le travail et répondre en conséquence. Ces commentaires sont publiés avec les preprints que quiconque peut lire et servir d’évaluation post-publication.
Epidemiological and clinical features of COVID-19 patients with and without pneumonia in Beijing, China (preprint)
medrxiv; 2020.
Preprint
Dans Anglais
| medRxiv | ID: ppzbmed-10.1101.2020.02.28.20028068
ABSTRACT
Background:
SARS-CoV-2-caused coronavirus disease (COVID-19) is posinga large casualty. The features of COVID-19patients withand without pneumonia,SARS-CoV-2 transmissibility in asymptomatic carriers, and factors predicting disease progression remain unknown.Methods:
We collected information on clinical characteristics, exposure history, andlaboratory examinations of all laboratory-confirmed COVID-19 patients admitted to PLA General Hospital. Cox regression analysis was applied to identify prognostic factors. The last follow-up was February 18, 2020.Results:
We characterized 55 consecutive COVID-19 patients. The mean incubation was 8.42(95% confidence interval [CI], 6.55-10.29) days. The mean SARS-CoV-2-positive duration from first positive test to clearance was 9.71(95%CI, 8.21-11.22) days. COVID-19 course was approximately 2 weeks. Asymptomatic carriers might transmit SARS-CoV-2. Compared with patients without pneumonia, those with pneumonia were 15 years older and had a higher rate of hypertension, higher frequencies of having a fever and cough, and higher levels of interleukin-6 (14.61 vs. 8.06pg/mL, P=0.040), B lymphocyte proportion (13.0% vs.10.0%, P=0.024), low account (<190/L) of CD8+ T cells (33.3% vs. 0, P=0.019). Multivariate Cox regression analysis indicated that circulating interleukin-6 andlactate independently predicted COVID-19 progression, with a hazard ratio (95%CI) of 1.052 (1.000-1.107) and 1.082 (1.013-1.155), respectively. During disease course,T lymphocytes were generally lower,neutrophils higher, in pneumonia patients than in pneumonia-free patients. CD8+ lymphocytes did not increase at the 20th days after illness onset.Conclusion:
The epidemiological features areimportant for COVID-19 prophylaxis. Circulating interleukin-6 and lactateare independent prognostic factors. CD8+ T cell exhaustion might be critical in the development of COVID-19.
Texte intégral:
Disponible
Collection:
Preprints
Base de données:
medRxiv
Sujet Principal:
Pneumopathie infectieuse
/
Infections à coronavirus
/
Toux
/
Fièvre
/
COVID-19
/
Hypertension artérielle
langue:
Anglais
Année:
2020
Type de document:
Preprint
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS