TY - JOUR AU - Cao, Shiyi AU - Gan, Yong AU - Wang, Chao AU - Bachmann, Max AU - Wei, Shanbo AU - Gong, Jie AU - Huang, Yuchai AU - Wang, Tiantian AU - Li, Liqing AU - Lu, Kai AU - Jiang, Heng AU - Gong, Yanhong AU - Xu, Hongbin AU - Shen, Xin AU - Tian, Qingfeng AU - Lv, Chuanzhu AU - Song, Fujian AU - Yin, Xiaoxv AU - Lu, Zuxun PY - 2020 DA - 2020/11/20 TI - Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China JO - Nature Communications SP - 5917 VL - 11 IS - 1 AB - Stringent COVID-19 control measures were imposed in Wuhan between January 23 and April 8, 2020. Estimates of the prevalence of infection following the release of restrictions could inform post-lockdown pandemic management. Here, we describe a city-wide SARS-CoV-2 nucleic acid screening programme between May 14 and June 1, 2020 in Wuhan. All city residents aged six years or older were eligible and 9,899,828 (92.9%) participated. No new symptomatic cases and 300 asymptomatic cases (detection rate 0.303/10,000, 95% CI 0.270–0.339/10,000) were identified. There were no positive tests amongst 1,174 close contacts of asymptomatic cases. 107 of 34,424 previously recovered COVID-19 patients tested positive again (re-positive rate 0.31%, 95% CI 0.423–0.574%). The prevalence of SARS-CoV-2 infection in Wuhan was therefore very low five to eight weeks after the end of lockdown. SN - 2041-1723 UR - https://doi.org/10.1038/s41467-020-19802-w DO - 10.1038/s41467-020-19802-w ID - Cao2020 ER -