Symptom Clustering Patterns and Population Characteristics of COVID-19 Based on Text Clustering Method.

Background: Descriptions of single clinical symptoms of coronavirus disease 2019 (COVID-19) have been widely reported. However, evidence of symptoms associations was still limited. We sought to explore the potential symptom clustering patterns and high-frequency symptom combinations of COVID-19 to enhance the understanding of people of this disease.

Epidemiological analysis of 67 local COVID-19 clusters in Sichuan Province, China.

Background: This study was intended to investigate the epidemiological characteristics of COVID-19 clusters and the severity distribution of clinical symptoms of involved cases in Sichuan Province, so as to provide information support for the development and adjustment of strategies for the prevention and control of local clusters.

Methods: The epidemiological characteristics of 67 local clusters of COVID-19 cases in Sichuan Province reported as of March 17, 2020 were described and analyzed. Information about all COVID-19 clusters and involved cases was acquired from the China Information System for Disease Control and Prevention and analyzed with the epidemiological investigation results taken into account.

Associations between short-term exposure to gaseous pollutants and pulmonary heart disease-related mortality among elderly people in Chengdu, China.

Background: Pulmonary heart disease (PHD) has become a global burden, especially in low- and middle-income countries. However, very few studies have assessed the influence of air pollution on PHD. This is the first study to explore the association between gaseous pollutants and PHD-related mortality in the central Sichuan Basin of southwestern China.

Human infection with a novel, highly pathogenic avian influenza A (H5N6) virus: Virological and clinical findings.

Background And Objectives: Severe infection with avian influenza A (H5N6) virus in humans was identified first in 2014 in China. Before that, it was unknown or unclear if the disease or the pathogen affected people. This study illustrates the virological and clinical findings of a fatal H5N6 virus infection in a human patient.

[Study on the natural foci of Marmota himalayana plague in Sichuan province].

Objective: To explore the existence of natural foci on Marmota himalayana plague in Sichuan province and to provide basis for prevention and control of the disease.

Methods: Both epidemiological investigation and laboratory tests were used to provide the host animal and fleas of the vectors with Yersinia pestis carriers.

Results: 30 species of animals were found to belong to 10 orders.

Preparation and response of medical and health institutions when energy flow is interrupted and infrastructure is damaged.

Energy interruption and infrastructure damage are the common characteristic between the snow disaster occurred in some southern provinces of China and the 5.12 Wenchuan earthquake in China in 2008. This paper summaries the effects on medical and health institutions caused by interruption of energy flow and damaged infrastructure, shares the preparation and response practices, experience, and lessons of medical disasters, and gives suggestions about how to prepare and response for medical and health institutions when energy flow is interrupted and infrastructure is damaged.