目的分析新型冠状病毒(SARS-CoV-2,简称新冠病毒)特异性抗体IgM、IgG对新型冠状病毒肺炎(COVID-19,简称新冠肺炎)的诊断价值。方法1)收集2020年3月上旬在本院发热门诊就诊的全部145名患者的新冠病毒IgM、IgG抗体(胶体金法)和核酸(荧光定...目的分析新型冠状病毒(SARS-CoV-2,简称新冠病毒)特异性抗体IgM、IgG对新型冠状病毒肺炎(COVID-19,简称新冠肺炎)的诊断价值。方法1)收集2020年3月上旬在本院发热门诊就诊的全部145名患者的新冠病毒IgM、IgG抗体(胶体金法)和核酸(荧光定量PCR法)检测结果(发热组),做配对卡方检验;2)收集3月5日当天做新冠病毒IgM、IgG抗体检测的612名新冠肺炎确诊患者(来自本院2月~3月作为新冠肺炎定点治疗医院收治的1500名新冠肺炎患者)的新冠病毒IgM、IgG抗体检测结果(新冠肺炎组),并跟踪随访患者出院后30、60 d的新冠病毒IgM、IgG抗体和核酸检测结果;通过对各组(间)的统计分析,明确抗体检测阳性率及抗体变化趋势等。结果1)发热组:新冠病毒抗体IgM阳性、IgG阳性及IgM合并IgG双阳性的比例分别为26.21%(38/145)、54.48%(79/145)及26.21%(38/145)(P<0.01);核酸检测阳性率4.14%(6/145)低于抗体阳性率(P<0.01);IgM和IgG均为阴性而核酸检测阳性的比例为0.69%(1/145)。2)新冠肺炎组:以2~98 d为观察时段,抗体阳性率由5%(1/20)逐渐增至97.8%(87/89);>56 d阳性率平缓下降。2~14 d的IgM阳性率5%(1/20)、IgG阳性率65%(13/20),≥14~56 d IgM阳性率47.68%(277/581)、IgG阳性率94.15%(547/581),≥56 d IgM、IgG阳性率均下降。所有患者住院期间IgM抗体阳性率45.8%(280/612),IgG抗体阳性率93.1%(570/612)。出院后(其中15名患者因转入他院治疗无后期复查数据)1和2个月的新冠病毒核酸检测均为阴性,出院后2个月IgG阳性率≥80%(487/597)、IgM阳性率≥40%(240/597)。结论胶体金法能很好地检测新冠病毒IgM、IgG抗体,阳性率高于核酸检测,其中IgG抗体产生早,阳性率高,持续时间长;联合应用胶体金抗体检测与核酸检测方法有助于提高新冠肺炎确诊和疑似病例的排除诊断。展开更多
In the present study, we analysed the results from the use of serological tests for the evaluation of the antibody response to SARS-CoV-2 virus, with the aim of verifying the seroprevalence for SARS-CoV-2 virus infect...In the present study, we analysed the results from the use of serological tests for the evaluation of the antibody response to SARS-CoV-2 virus, with the aim of verifying the seroprevalence for SARS-CoV-2 virus infection in Rome. Evaluations related to the seroprevalence are important for defining the epidemiological parameters of this disease. We therefore analysed the data deriving from 1586 subjects, residing in the geographical area of Rome, subjected to a rapid test, capable of detecting the presence of specific IgM and IgG class antibodies directed against the SARS-CoV-2 virus. Among the 1586 cases, 83 had positive conversion of IgM antibody and/or IgG antibody and 1503 tested negative. Out of 83 positive cases, 48% (40/83) samples resulted positively for both IgM and IgG, while 45% (37/83) were positive for IgG only, and 7% (6/83) for IgM only. The prevalence of anti-SARS-CoV-2 antibodies in the considered geographical area was 5% (83/1586), and 54% (45/83) of our population was an asymptomatic carrier. The study was performed to better evaluate the population prevalence in the studied geographic area. To our knowledge, this is the first study carried out in the Lazio region reporting data related to the asymptomatic carriers.展开更多
Corona Virus Disease 2019 (COVID-19) is a highly transmissible and pathogenic viral infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which erupted in Wuhan, China, in 2019 and has spre...Corona Virus Disease 2019 (COVID-19) is a highly transmissible and pathogenic viral infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which erupted in Wuhan, China, in 2019 and has spread worldwide [1]. The objective of this study was to assess the seroprevalence of SARS-CoV-2 among blood donors in the Republic of Congo. Method: This is an analytical and cross-sectional study that was carried out during the period from July to December 2021. Biological analyses were performed with the serological tests n2019 rapid IgG/IgM from Beijing Diagreat Biotechnologies and antigen tests from Abbot using the serum for the detection of anti-SARS-Cov-2 antibodies and nasal mucus for the detection of SARS-Cov-2 antigens. Statistical analysis was performed using SPSS version 22. The Results: Out of 2553 donors recruited in our study, we observed a predominance of male sex with 86.1% or a ratio of 6.19, the age group of 18 - 30 years was dominant with 45.9%, family donation represented 59.2%, the dominant profession was workers with 46.9% and the dominant blood group was O Rh positive with 54%. The prevalence of anti-SRAS-CoV-2 antibodies and antigens were respectively 31.4% for anti-SRAS CoV-2 IgG antibodies, 36.7% for anti-SRAS CoV-2 IgM antibodies and 2.93% for SARS-CoV-2 antigen.展开更多
文摘目的分析新型冠状病毒(SARS-CoV-2,简称新冠病毒)特异性抗体IgM、IgG对新型冠状病毒肺炎(COVID-19,简称新冠肺炎)的诊断价值。方法1)收集2020年3月上旬在本院发热门诊就诊的全部145名患者的新冠病毒IgM、IgG抗体(胶体金法)和核酸(荧光定量PCR法)检测结果(发热组),做配对卡方检验;2)收集3月5日当天做新冠病毒IgM、IgG抗体检测的612名新冠肺炎确诊患者(来自本院2月~3月作为新冠肺炎定点治疗医院收治的1500名新冠肺炎患者)的新冠病毒IgM、IgG抗体检测结果(新冠肺炎组),并跟踪随访患者出院后30、60 d的新冠病毒IgM、IgG抗体和核酸检测结果;通过对各组(间)的统计分析,明确抗体检测阳性率及抗体变化趋势等。结果1)发热组:新冠病毒抗体IgM阳性、IgG阳性及IgM合并IgG双阳性的比例分别为26.21%(38/145)、54.48%(79/145)及26.21%(38/145)(P<0.01);核酸检测阳性率4.14%(6/145)低于抗体阳性率(P<0.01);IgM和IgG均为阴性而核酸检测阳性的比例为0.69%(1/145)。2)新冠肺炎组:以2~98 d为观察时段,抗体阳性率由5%(1/20)逐渐增至97.8%(87/89);>56 d阳性率平缓下降。2~14 d的IgM阳性率5%(1/20)、IgG阳性率65%(13/20),≥14~56 d IgM阳性率47.68%(277/581)、IgG阳性率94.15%(547/581),≥56 d IgM、IgG阳性率均下降。所有患者住院期间IgM抗体阳性率45.8%(280/612),IgG抗体阳性率93.1%(570/612)。出院后(其中15名患者因转入他院治疗无后期复查数据)1和2个月的新冠病毒核酸检测均为阴性,出院后2个月IgG阳性率≥80%(487/597)、IgM阳性率≥40%(240/597)。结论胶体金法能很好地检测新冠病毒IgM、IgG抗体,阳性率高于核酸检测,其中IgG抗体产生早,阳性率高,持续时间长;联合应用胶体金抗体检测与核酸检测方法有助于提高新冠肺炎确诊和疑似病例的排除诊断。
文摘In the present study, we analysed the results from the use of serological tests for the evaluation of the antibody response to SARS-CoV-2 virus, with the aim of verifying the seroprevalence for SARS-CoV-2 virus infection in Rome. Evaluations related to the seroprevalence are important for defining the epidemiological parameters of this disease. We therefore analysed the data deriving from 1586 subjects, residing in the geographical area of Rome, subjected to a rapid test, capable of detecting the presence of specific IgM and IgG class antibodies directed against the SARS-CoV-2 virus. Among the 1586 cases, 83 had positive conversion of IgM antibody and/or IgG antibody and 1503 tested negative. Out of 83 positive cases, 48% (40/83) samples resulted positively for both IgM and IgG, while 45% (37/83) were positive for IgG only, and 7% (6/83) for IgM only. The prevalence of anti-SARS-CoV-2 antibodies in the considered geographical area was 5% (83/1586), and 54% (45/83) of our population was an asymptomatic carrier. The study was performed to better evaluate the population prevalence in the studied geographic area. To our knowledge, this is the first study carried out in the Lazio region reporting data related to the asymptomatic carriers.
文摘Corona Virus Disease 2019 (COVID-19) is a highly transmissible and pathogenic viral infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which erupted in Wuhan, China, in 2019 and has spread worldwide [1]. The objective of this study was to assess the seroprevalence of SARS-CoV-2 among blood donors in the Republic of Congo. Method: This is an analytical and cross-sectional study that was carried out during the period from July to December 2021. Biological analyses were performed with the serological tests n2019 rapid IgG/IgM from Beijing Diagreat Biotechnologies and antigen tests from Abbot using the serum for the detection of anti-SARS-Cov-2 antibodies and nasal mucus for the detection of SARS-Cov-2 antigens. Statistical analysis was performed using SPSS version 22. The Results: Out of 2553 donors recruited in our study, we observed a predominance of male sex with 86.1% or a ratio of 6.19, the age group of 18 - 30 years was dominant with 45.9%, family donation represented 59.2%, the dominant profession was workers with 46.9% and the dominant blood group was O Rh positive with 54%. The prevalence of anti-SRAS-CoV-2 antibodies and antigens were respectively 31.4% for anti-SRAS CoV-2 IgG antibodies, 36.7% for anti-SRAS CoV-2 IgM antibodies and 2.93% for SARS-CoV-2 antigen.
