Effects of Environmental Factors on Severity and Mortality of COVID-19.
Effects of Environmental Factors on Severity and Mortality of COVID-19.
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环境因素对 COVID-19 严重程度和死亡率的影响。
DOI:
10.3389/fmed.2020.607786
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发表时间:
2020
影响因子:
3.9
通讯作者:
Lauc G
中科院分区:
文献类型:
--
作者:
Kifer D;Bugada D;Villar-Garcia J;Gudelj I;Menni C;Sudre C;Vučković F;Ugrina I;Lorini LF;Posso M;Bettinelli S;Ughi N;Maloberti A;Epis O;Giannattasio C;Rossetti C;Kalogjera L;Peršec J;Ollivere L;Ollivere BJ;Yan H;Cai T;Aithal GP;Steves CJ;Kantele A;Kajova M;Vapalahti O;Sajantila A;Wojtowicz R;Wierzba W;Krol Z;Zaczynski A;Zycinska K;Postula M;Lukšić I;Čivljak R;Markotić A;Brachmann J;Markl A;Mahnkopf C;Murray B;Ourselin S;Valdes AM;Horcajada JP;Castells X;Pascual J;Allegri M;Primorac D;Spector TD;Barrios C;Lauc G
Background: Most respiratory viruses show pronounced seasonality, but for SARS-CoV-2, this still needs to be documented. Methods: We examined the disease progression of COVID-19 in 6,914 patients admitted to hospitals in Europe and China. In addition, we evaluated progress of disease symptoms in 37,187 individuals reporting symptoms into the COVID Symptom Study application. Findings: Meta-analysis of the mortality risk in seven European hospitals estimated odds ratios per 1-day increase in the admission date to be 0.981 (0.973–0.988, p < 0.001) and per increase in ambient temperature of 1°C to be 0.854 (0.773–0.944, p = 0.007). Statistically significant decreases of comparable magnitude in median hospital stay, probability of transfer to the intensive care unit, and need for mechanical ventilation were also observed in most, but not all hospitals. The analysis of individually reported symptoms of 37,187 individuals in the UK also showed the decrease in symptom duration and disease severity with time. Interpretation: Severity of COVID-19 in Europe decreased significantly between March and May and the seasonality of COVID-19 is the most likely explanation.