Limited data are available for clinical characteristics of patients with coronavirus disease 2019 (COVID-19) outside Wuhan. This study aimed to describe the clinical characteristics of COVID-19 and identify the risk factors for severe illness of COVID-19 in Jiangsu province, China. Clinical data of hospitalized COVID-19 patients were retrospectively collected in 8 hospitals from 8 cities of Jiangsu province, China. Clinical findings of COVID-19 patients were described and risk factors for severe illness of COVID-19 were analyzed. By Feb 10, 2020, 202 hospitalized patients with COVID-19 were enrolled. The median age of patients was 44.0 years (interquartile range, 33.0-54.0). 55 (27.2%) patients had comorbidities. At the onset of illness, the common symptoms were fever (156 [77.2%]) and cough (120 [59.4%]). 66 (32.7%) patients had lymphopenia. 193 (95.5%) patients had abnormal radiological findings. 11 (5.4%) patients were admitted to the intensive care unit and none of the patients died. 23 (11.4%) patients had severe illness. Severe illness of COVID-19 was independently associated with body mass index (BMI) � 28 kg/m 2 (odds ratio [OR], 9.219; 95% confidence interval [CI], 2.731 to 31.126; P<0.001) and a known history of type 2 diabetes PLOS NEGLECTED TROPICAL DISEASES PLOS Neglected Tropical Diseases | https://doi.org/10.1371/journal.pntd.

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Background and Aims Previous studies reported that coronavirus disease 2019 (COVID‐19) was likely to result in liver injury. However, few studies investigated liver injury in COVID‐19 patients with chronic liver diseases. We described the clinical features in COVID‐19 patients with non‐alcoholic fatty liver disease (NAFLD). Methods Confirmed COVID‐19 patients from hospitals in 10 cities of Jiangsu province, China were retrospectively included between January 18, 2020, and February 26, 2020. Hepatic Steatosis Index (HSI) was used to defined NAFLD. Results A total of 280 COVID‐19 patients were enrolled. Eighty‐six (30.7%) of 280 COVID‐19 patients were diagnosed as NAFLD by HSI. 100 (35.7%) patients presented abnormal liver function on admission. The median ALT levels (34.5 U/L vs. 23.0 U/L, P<0.001) and the proportion of elevated ALT (>40 U/L) (40.7% vs. 10.8%, P<0.001) were significantly higher in patients with NAFLD than in patients without NAFLD on admission. The proportion of elevated ALT in patients with NAFLD was also significantly higher than patients without NAFLD (65.1% vs. 38.7%, P<0.001) during hospitalization. Multivariate analysis showed that age over 50 years (odds ratio [OR] 2.077, 95% confidence interval [CI] 1.183‐3.648, P=0.011), and concurrent NAFLD (OR 2.956, 95% CI 1.526‐5.726, P=0.001) were independent risk factors of ALT elevation in COVID‐19 patients, while the atomized inhalation of interferon α‐2b (OR 0.402, 95%CI 0.236‐0.683, P=0.001) was associated with the reduced risk of ALT elevation during hospitalization. No patient developed liver failure or death during hospitalization. The complications and clinical outcomes were comparable between COVID‐19 patients with and without NAFLD. Conclusions NAFLD patients are more likely to develop liver injury when infected by COVID‐19. However, no patient developed severe liver‐related complications during hospitalization.

In this paper we consider the following 2D BoussinesqNavier-Stokes systemswhere f (α) < 1 is an explicit function as a technical bound, we prove the global well-posedness results for the rough initial data. Mathematics Subject Classification (2000). 76D03, 76D05, 35B33, 35Q35.

In this paper we consider the following modified quasi-geostrophic equationwith ν > 0 and α ∈]0, 1[ ∪ ]1, 2[. When α ∈]0, 1[, the equation was firstly introduced by Constantin, Iyer and Wu in [10]. Here, by using the modulus of continuity method, we prove the global well-posedness of the system with the smooth initial data. As a byproduct, we also show that for every α ∈]0, 2[, the Lipschitz norm of the solution has a uniform exponential bound.MSC (2000): 76U05, 76B03, 35Q35

Objective This study aimed to observe the clinical characteristics of patients with coronavirus disease 2019 (COVID‐19) with overweight and obesity. Methods Consecutive patients with COVID‐19 from 10 hospitals of Jiangsu province, China, were enrolled. Results A total of 297 patients with COVID‐19 were included, and 39.39% and 13.47% of patients had overweight and obesity, respectively. The proportions of bilateral pneumonia (92.50% vs. 73.57%, P = 0.033) and type 2 diabetes (17.50% vs. 3.57%, P = 0.006) were higher in patients with obesity than lean patients. The proportions of severe illness in patients with overweight (12.82% vs. 2.86%, P = 0.006) and obesity (25.00% vs. 2.86%, P < 0.001) were significantly higher than lean patients. More patients with obesity developed respiratory failure (20.00% vs. 2.86%, P < 0.001) and acute respiratory distress syndrome (5.00% vs. 0%, P = 0.024) than lean patients. The median days of hospitalization were longer in patients with obesity than lean patients (17.00 days vs. 14.00 days, P = 0.029). Overweight (OR, 4.222; 95% CI: 1.322‐13.476; P = 0.015) and obesity (OR, 9.216; 95% CI: 2.581‐32.903; P = 0.001) were independent risk factors of severe illness. Obesity (HR, 6.607; 95% CI: 1.955‐22.329; P = 0.002) was an independent risk factor of respiratory failure. Conclusions Overweight and obesity were independent risk factors of severe illness in COVID‐19 patients. More attention should be paid to these patients.

In this article we consider the following generalized quasi-geostrophic equation \partial_t\theta + u\cdot\nabla \theta + \nu \Lambda^\beta \theta =0, \quad u= \Lambda^\alpha \mathcal{R}^\bot\theta, \quad x\in\mathbb{R}^2, where $\nu>0$, $\Lambda:=\sqrt{-\Delta}$, $\alpha\in ]0,1[$ and $\beta\in ]0,2[$. We first show a general criterion yielding the nonlocal maximum principles for the whole space active scalars, then mainly by applying the general criterion, for the case $\alpha\in]0,1[$ and $\beta\in ]\alpha+1,2]$ we obtain the global well-posedness of the system with smooth initial data; and for the case $\alpha\in ]0,1[$ and $\beta\in ]2\alpha,\alpha+1]$ we prove the local smoothness and the eventual regularity of the weak solution of the system with appropriate initial data.Comment: 31page

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