Two injections of an mRNA-based vaccine encoding the SARS-CoV-2 spike protein elicited high levels of neutralizing antibody and Th1 CD4 T-cell responses in rhesus macaques. Two days after challenge of vaccinated animals with intranasal and intratracheal virus, viral replication was undetectable in bronchoalveolar-lavage fluid and nasal secretions.
Evaluation of the mRNA-1273 Vaccine against SARS-CoV-2 in Nonhuman Primates
