High SARS-CoV-2 seroprevalence in persons experiencing homelessness and shelter workers from a day-shelter in São Paulo, Brazil. by Anahi Chechia do Couto, Louise Bach Kmetiuk, Ruana Renostro Delai, Ana Pérola Drulla Brandão, Cairo Oliveira Monteiro, Luciana Helena Antoniassi da Silva, Camila Soares, Alexandre Campos Banari, Renato van Wilpe Bach, Christina Pettan-Brewer, Andrea Pires Dos Santos, Ana Marcia Sá Guimarães, Danielle Bruna Leal Oliveira, Edison Luiz Durigon, Alexander Welker Biondo

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