1Groupe d'intervention en sante Publique et Epidemiologie, Marseille, France.
2Institut National de sante Publique, Abidjan, Cote d'Ivoire.
Am J Trop Med Hyg. 2021 Mar 18;104(5):1709-1712. doi: 10.4269/ajtmh.21-0081.
Of the 107 million COVID-19 cases worldwide, less than 2 million have been reported in African countries. The aim of this study was to evaluate the seroprevalence of SARS-CoV-2 infection in Ivory Coast mine workers. From July 15 to October 13, 2020, a voluntary serological test campaign was conducted in 3 sites: two gold mines, and the headquarters in Abidjan. Rapid tests to detect IgG and IgM on capillary blood were performed. To identify independent sociodemographic characteristics associated with a higher SARS-CoV-2 seroprevalence rate, a multivariate logistic regression analysis was performed. A total of 1,687 subjects were tested; 91% were male (n = 1,536), and the mean age was 37 years. The overall seroprevalence was 25.1% (n = 422), ranging between 13.6% (11.2-16.1%), 34.4% (31.1-37.7%), and 34.7% (26.2-43.2%) in mine A, in mine B, and in Abidjan, respectively. Among the 422 seropositive subjects, 74 reported mild symptoms in the three previous months and one was hospitalized for severe COVID-19 infection. SARS-CoV-2 seroprevalence is high in both gold miners and administrative staff working in Ivory Coast. The burden of infection in West Africa has probably been underestimated till now.
在全球 1.07 亿例 COVID-19 病例中，非洲国家报告的病例不到 200 万。本研究旨在评估科特迪瓦矿工中 SARS-CoV-2 感染的血清流行率。2020 年 7 月 15 日至 10 月 13 日，在三个地点（两个金矿和阿比让总部）进行了自愿血清学检测运动。对毛细血管血中的 IgG 和 IgM 进行了快速检测。为了确定与 SARS-CoV-2 血清阳性率较高相关的独立社会人口统计学特征，进行了多变量逻辑回归分析。共检测了 1687 名受试者；91%为男性（n=1536），平均年龄为 37 岁。总血清阳性率为 25.1%（n=422），分别在矿 A、矿 B 和阿比让的范围为 13.6%（11.2-16.1%）、34.4%（31.1-37.7%）和 34.7%（26.2-43.2%）。在 422 名血清阳性受试者中，有 74 人在过去三个月中报告有轻度症状，1 人因严重 COVID-19 感染住院。在科特迪瓦，金矿工人和行政人员的 SARS-CoV-2 血清阳性率均较高。迄今为止，西非的感染负担可能被低估了。
