Background In March 2020, the COVID-19 outbreak was declared a pandemic by the World Health Organization. Aim Our objective was to identify risk factors predictive of severe disease and death in France. Methods In this prospective cohort study, we included patients ≥ 18 years old with confirmed COVID-19, hospitalised in Strasbourg and Mulhouse hospitals (France), in March 2020. We respectively compared patients who developed severe disease (admission to an intensive care unit (ICU) or death) and patients who died, to those who did not, by day 7 after hospitalisation. Results Among 1,045 patients, 424 (41%) had severe disease, including 335 (32%) who were admitted to ICU, and 115 (11%) who died. Mean age was 66 years (range: 20–100), and 612 (59%) were men. Almost 75% of patients with body mass index (BMI) data (n = 897) had a BMI ≥ 25 kg/m2 (n = 661). Independent risk factors associated with severe disease were advanced age (odds ratio (OR): 1.1 per 10-year increase; 95% CrI (credible interval): 1.0–1.2), male sex (OR: 2.1; 95% CrI: 1.5–2.8), BMI of 25–29.9 kg/m2 (OR: 1.8; 95% CrI: 1.2–2.7) or ≥ 30 (OR: 2.2; 95% CrI: 1.5–3.3), dyspnoea (OR: 2.5; 95% CrI: 1.8–3.4) and inflammatory parameters (elevated C-reactive protein and neutrophil count, low lymphocyte count). Risk factors associated with death were advanced age (OR: 2.7 per 10-year increase; 95% CrI: 2.1–3.4), male sex (OR: 1.7; 95% CrI: 1.1–2.7), immunosuppression (OR: 3.8; 95% CrI: 1.6–7.7), diabetes (OR: 1.7; 95% CrI: 1.0–2.7), chronic kidney disease (OR: 2.3; 95% CrI: 1.3–3.9), dyspnoea (OR: 2.1; 95% CrI: 1.2–3.4) and inflammatory parameters. Conclusions Overweightedness, obesity, advanced age, male sex, comorbidities, dyspnoea and inflammation are risk factors for severe COVID-19 or death in hospitalised patients. Identifying these features among patients in routine clinical practice might improve COVID-19 management.

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Introduction En mars 2020, l’OMS déclarait que l’Europe était le nouvel épicentre de la maladie à coronavirus 2019 (COVID-19). L’objectif de cette étude était d’identifier dans une population européenne, les facteurs de risque associés aux formes sévères. Matériels et méthodes Dans cette étude prospective non interventionnelle, nous avons inclus des patients ayant un diagnostic de COVID-19 confirmé par PCR, admis dans deux hôpitaux français au mois de mars 2020. Nous avons comparé deux groupes de patients : ceux ayant une infection non sévère et ceux ayant une infection sévère. L’infection sévère était définie par un critère composite incluant le décès ou le transfert en réanimation dans les 7 jours suivants l’admission à l’hôpital. Les facteurs de risque étaient évalués à l’admission. Résultats Sur les 1045 patients inclus, 424 (41 %) ont présenté une forme sévère, dont 335 (32 %) étaient admis en réanimation, et 111 (11 %) étaient décédés. L’âge moyen était de 66 ± 16 ans et 612 (59 %) étaient des hommes. Au total, 661 (63 %) patients avaient un indice de masse corporelle (IMC) ≥ 25 kg/m 2 . Les facteurs de risque associés aux formes sévères étaient l’âge avancé ( odds ratio (OR) = 1,1 par tranche de dix ans ; intervalle de confiance (IC) 95 % [1,0–1,2]), le sexe masculin (OR = 2,1 ; IC 95 % [1,5–2,8]), un IMC compris entre 25 et 29,9 kg/m 2 (OR 1,8 ; IC 95 % [1,2–2,7]) ou ≥ 30 (OR = 2,2 ; IC 95 % [1,5–3,3]), la présence d’une dyspnée (OR = 2,5 ; IC 95 % [1,8–3,4]), une CRP comprise entre 100 et 199 mg/L (OR 1,7 ; IC 95 % [1,2–2,3]) ou ≥ 200 mg/L (OR 4,4 ; IC 95 % [2,7–6,7]), un taux de polynucléaires neutrophiles ≥ 8000 par μL (OR 2,2 ; IC 95 % [1,5–3,0]), et un taux de lymphocytes < 1000 par μL (OR 1,4 ; IC 95 % [1,1–2,0]). Conclusion Le surpoids et l’obésité, l’âge avancé, le sexe masculin, la présence d’une dyspnée, l’élévation des paramètres inflammatoires et la lymphopénie sont des facteurs de risque associés aux formes sévères de COVID-19 chez les patients hospitalisés. L’identification de ces facteurs de risque, facilement utilisables en pratique clinique, semble importante à la fois pour améliorer la prise en charge des patients mais également pour guider la mise en place de mesures de santé publique afin de limiter l’impact de cette pandémie dans les populations les plus fragiles.

Mucormycosis is a rare but life-threatening fungal infection due to molds of the order Mucorales. The incidence has been increasing over recent decades. Worldwide, pulmonary mucormycosis (PM) presents in the lungs, which are the third main location for the infection after the rhino-orbito-cerebral (ROC) areas and the skin. The main risk factors for PM include hematological malignancies and solid organ transplantation, whereas ROC infections classically are classically favored by diabetes mellitus. The differences between the ROC and pulmonary locations are possibly explained by the activation of different mammalian receptors—GRP78 in nasal epithelial cells and integrin β1 in alveolar epithelial cells—in response to Mucorales. Alveolar macrophages and neutrophils play a key role in the host defense against Mucorales. The diagnosis of PM relies on CT scans, cultures, PCR tests, and histology. The reversed halo sign is an early, but very suggestive, sign of PM in neutropenic patients. Recently, the serum PCR test showed a very encouraging performance for the diagnosis and follow-up of mucormycosis. Liposomal amphotericin B is the drug of choice for first-line therapy, together with correction of underlying disease and surgery when feasible. After a stable or partial response, the step-down treatment includes oral isavuconazole or posaconazole delayed release tablets until a complete response is achieved. Secondary prophylaxis should be discussed when there is any risk of relapse, such as the persistence of neutropenia or the prolonged use of high-dose immunosuppressive therapy. Despite these novelties, the mortality rate from PM remains higher than 50%. Therefore, future research must define the place for combination therapy and adjunctive treatments, while the development of new treatments is necessary.