Monitoring Emergence of the SARS-CoV-2 B.1.1.7 Variant through the Spanish National SARS-CoV-2 Wastewater Surveillance System (VATar COVID-19)

Albert Carcereny, Adán Martínez-Velázquez, Albert Bosch, Ana Allende, Pilar Truchado, Jenifer Cascales, Jesús L. Romalde, Marta Lois, David Polo, Gloria Sánchez, Alba Pérez-Cataluña, Azahara Díaz-Reolid, Andrés Antón, Josep Gregori, Damir Garcia-Cehic, Josep Quer, Margarita Palau, Cristina González Ruano, Rosa M. Pintó^*, Susana Guix^*