Pfizer and BioNTech Publish Preclinical Data from Investigational COVID-19 Vaccine Program in Nature New York, NY and Mainz, Germany, February 1, 2021 (GLOBE NEWSWIRE) — BioNTech SE (Nasdaq: BNTX) today announced that preclinical data in non-human primate and mouse models from Pfizer and BioNTech’s mRNA-based vaccine candidates, BNT162b1 and BNT162b2, for the prevention of COVID-19 were published in the journal Nature. Some of these data were initially made available to the public on September 9, 2020 via the online preprint server, bioRxiv. For additional details, please read the previously issued The preclinical data found immunization of rhesus macaques with either the BNT162b1 or BNT162b2 vaccine candidate elicited SARS-CoV-2 neutralizing geometric mean titers 8.2 to 18.2 times that of a SARS-CoV-2 convalescent human serum panel. Additionally, the vaccine candidates protected macaques from SARS-CoV-2 challenge, with BNT162b2 protecting the lower respiratory tract from the presence of viral RNA and with no evidence of disease enhancement. In mice, one intramuscular dose of either vaccine candidate elicited a dose-dependent antibody response with high virus-entry inhibition titers and strong TH1 CD4+ and IFNg + CD8+ T-cell responses.