Efficacy and feasibility of a novel semi-facial respirator with chitosan nanoparticles on the incidence of SARS-CoV-2 infection in healthcare professionals: randomized controlled trial

Aline Midori Adati Kubota, Mário Fabrício Fleury Rosa, Solange Baraldi, Janine Araújo Montefusco Vale, Joana D Arc Gonçalves da Silva, Marcella Lemos Brettas Carneiro, Rosimeire Simprini Padula, Rodrigo Haddad, Graziella Anselmo Joanitti, Glécia Virgolino da Silva Luz, Marcus Vinícius Lia Fook, Ivan Ricardo Zimmermann, Suélia de Siqueira Rodrigues Fleury Rosa, Henry Maia Peixoto, Rodrigo Luiz Carregaro