RT Journal Article SR Electronic(1) A1 Zhang, Li A1 Zhang, Yi A1 Duan, Wei A1 Wu, Shuangsheng A1 Sun, Ying A1 Ma, Chunna A1 Wang, Quanyi A1 Zhang, Daitao A1 Yang, Peng YR 2023 T1 Using an influenza surveillance system to estimate the number of SARS-CoV-2 infections in Beijing, China, weeks 2 to 6 2023 JF Eurosurveillance VO 28 IS 11 SP 2300128 OP DO https://doi.org/10.2807/1560-7917.ES.2023.28.11.2300128 UL https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2023.28.11.2300128