claim: experimental covid-19 vaccine infects upper and lower airways in nonhuman primates
evidence_1: moreover, none of the eight macaques vaccinated with 100 µg of mrna-1273 had detectable virus in their noses two days after virus exposure.", "this is the first time an experimental covid-19 vaccine tested in nonhuman primates has been shown to produce such rapid viral control in the upper airway, the investigators note.")