Early detection of SARS-CoV-2 infection cases or outbreaks at nursing homes by targeted wastewater tracking. (July 2021) - Davó, Laura; Seguí, Raimundo; Botija, Pilar; Beltrán, María José; Albert, Eliseo; Torres, Ignacio; López-Fernández, Pablo Ángel; Ortí, Rafael; Maestre, Juan Francisco; Sánchez, Gloria; Navarro, David