Catalan Surveillance Network of SARS-CoV-2 in Sewage

The Catalan Surveillance Network of SARS-CoV-2 in Sewage started in July 2020 to monitor 56 wastewater treatment plants (WWTPs) all over the country representing the sewage from the 80% of the total population. The sampling plan consist in a weekly collection of 24 hours-composed-flow proportional water sample from the entrance of each WWTPs. The raw sewage samples are send to references laboratories for analysis within 24h after collection. Samples are concentrated, the RNA extracted and finally amplyfied using two target genes (N1/N2 or N1/IP4). Here, we periodically release the dataset of the results obtained for each WWTP analysed with sampling date, gene copies per litre for each viral target, the daily flow from the WWTP, rain events registered and extra comments.新冠病毒（SARS-CoV-2）加泰罗尼亚地区污水监测网络于2020年7月启动，旨在对全境56座污水处理厂（wastewater treatment plants，简称WWTPs）开展监测，覆盖全国80%总人口的污水排放范围。该监测网络的采样方案为：每周从每座污水处理厂的进水口采集24小时混合流量比例水样；采集得到的原始污水样本需在24小时内送至参考实验室进行分析。实验流程包括对样本进行浓缩、提取核糖核酸（RNA），最终通过两种靶标基因（N1/N2或N1/IP4）完成扩增检测。本研究将定期发布各污水处理厂的检测数据集，具体内容包含采样日期、每种病毒靶标的每升基因拷贝数、污水处理厂的日处理流量、记录的降雨事件及补充说明。