Objective: To analyze the clinical features of asymptomatic patients infected with the SARS-CoV-2 novel coronavirus. Methods: The clinical data of 10 asymptomatic cases and 12 symptomatic cases of COVID-19 diagnosed during February 2020 to April 2020 was collected and the clinical features of the two groups of patients were compared. Results: 10 cases of asymptomatic infection and 12 cases of symptomatic patients were tested positive for the novel coronavirus nucleic acid test. There was no significant difference in gender distribution between the two groups (P?0.05); the average age of patients in the asymptomatic group was lower than that of the symptomatic group ( P?0.05), the difference in clinical classification between the two groups was statistically significant (P?0.05); there was no statistically significant difference in the results of chest CT examination involving lung lobes between the two groups (P?0.05), and there was no statistically significant difference in mortality between the two groups (P>0.05). Conclusion: The average age of asymptomatic novel coronavirus infections was lower than that of confirmed cases of COVID-19, mainly among young people. There was no significant difference in clinical classification, mortality and chest CT examination results between symptomatic and asymptomatic cases.
Objective: To analyze the epidemiological characteristics of asymptomatic SARS-CoV-2 novel coronavirus infection cases in Yinchuan City, Ningxia. Methods: Cases of asymptomatic SARS-CoV-2 novel coronavirus infections discovered in Yinchuan City from February 2020 to April 2020 were taken as the research subjects, epidemiological and laboratory examination data were collected, and statistics and analysis were conducted. Results: Among the 10 cases of asymptomatic infection, 6 were males and 4 were females, with an average age of (34.3±2.1) years; 2 cases had a history of living in Hubei, 8 cases had a history of close contact with confirmed cases; 6 cases had no other underlying diseases while the other 4 cases were accompanied by one or more underlying diseases; 6 cases were diagnosed as asymptomatic infection by serum-specific IgM antibody detection; 4 cases were diagnosed as asymptomatic infection by throat swab testing; there were 4 cases with alanine base transferase level higher than the normal range, 2 cases with aspartate aminotransferase level higher than the normal range, and 3 cases with D-dimer level out of the normal range. Conclusion: The asymptomatic SARS-CoV-2 novel coronavirus infection has certain clinical characteristics; it is infectious and has insidious characteristics. Even if medical observation is dismissed, monitoring is still needed to prevent the pandemic from rebounding.
Objective: To analyze the clinical characteristics and chest CT imaging characteristics of patients with confirmed COVID-19 (COVID-19) and patients with suspected COVID-19. Methods: The study time span was from February 2020 to May 2020. The case samples were selected from 72 patients with confirmed covid-19 and suspected covid-19 diagnosed and treated by The First People’s Hospital of Yinchuan and Yinchuan Temporary Emergency Hospital, including 38 patients with confirmed covid-19 and 34 patients with suspected covid-19. All patients underwent laboratory examination and chest CT examination, and the specific examination results were compared and analyzed. Results: There were significant differences in number of white blood cell, percentage of lymphocytes, creatine kinase and erythrocyte sedimentation rate between confirmed and suspected COVID-19 patients (P<0.05). The CT imaging characteristics of COVID-19 patients were compared with those of suspected COVID-19 patients. The lesions of COVID-19 patients were mostly characterized by mixed ground glass density and pure ground glass density. There were vascular thickening and interstitial thickness increase, and accompanied by bronchiectasis or air bronchogram. The distribution of lesions was mostly subpleural without pleural effusion. The lesion area of suspected COVID-19 patients mostly showed solid density and mixed ground glass density. The lesion was distributed along bronchovascular and pleural effusion was observed. Conclusion: There are some differences in biochemical indexes and chest CT images between confirmed and suspected covid-19 patients, which can be used for differential diagnosis.
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