Supplementing SARS-CoV-2 genomic surveillance with PCR-based variant detection for real-time actionable information, the Netherlands, June to July 2021. - Molenkamp R; Fanoy E; Derickx L; de Groot T; Jonges M; Leenstra T; Nijhuis R; Pas S; Vahidnia A; von Wintersdorff C; Mulder B; Koopmans M (Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2021)