无锡SARS-CoV-2病例的流行病学和临床复阳评价

目的 通过分析无锡新型冠状病毒肺炎(SARS-CoV-2)的传播关系、临床分级和复阳病例的临床表现评价本地病毒的传播及致病性特征.方法 以2020年1月23日至11月20日无锡市第五人民医院收治的SARS-CoV-2阳性病例为研究对象,通过分析传播的流行病学及复阳病例的临床特征,初步评价病毒的传播及致病性特征.结果 C...

Epidemiology and clinical re-positivity evaluation of SARS-CoV-2 cases in Wuxi

This study aimed to analyze the relationship between SARS-CoV-2 spreading and clinical classification to evaluate the transmission and pathogenicity characteristics of the local virus, and to understand the clinical characteristics of SARS-CoV-2 reactivation, on the basis of the clinical manifestations in Wuxi. We collected information on the SARS-CoV-2 positive cases admitted to The Fifth People's Hospital of Wuxi from January 23 to November 20, 2020. According to epidemiological and clinical characteristics, we analyzed the changes in the transmission and pathogenicity of the virus and the clinical manifestations of SARS-CoV-2 reactivation cases. The severe and critical COVID-19 cases appeared only before the second-generation, whereas the third-generation cases were all mild. The rate of severe illness in the second-generation (7.1%) was significantly lower than that in the first-generation (17.5%), and the overseas imported cases (n-generation cases) were asymptomatic and mild. The presence of antibodies (IgM and IgG) in partially asymptomatic and mild cases appeared to become negative. The clinical features of SARS-CoV-2 first-positive and reactivation cases showed that some cases (2/3) developed lung inflammation, but their blood clinical indicators were normal. The proportion of severe cases of SARS-CoV-2 infection in Wuxi has decreased gradually, and asymptomatic or mild cases may become a high-risk group of viral re-yang. Immunological indicators can help predict clinical re-positivity.