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Non-integrative, non-cytopathic and non-inflammatory lentivectors are particularly suitable for mucosal vaccination and recently emerge as a promising strategy to elicit sterilizing prophylaxis against SARS-CoV-2 in preclinical animal models. Here, we demonstrate that a single intranasal administration of a lentivector encoding a prefusion form of SARS-CoV-2 spike glycoprotein induces full protection of respiratory tracts and totally avoids pulmonary inflammation in the susceptible hamsterdoi:10.1101/2021.02.03.429211 fatcat:nkdh53jh35dkhnvhkvnmzddawa