claim: nih-moderna investigational covid-19 vaccine shows promise in human studies
evidence_1: the investigational vaccine also induced robust cd8 t-cell responses in mice.", "the investigators vaccinated mice with sub-protective doses of mrna-1273 and then challenged the mice with sars-cov-2.", "additional experiments found that mice given two injections of the 1-mcg dose and later challenged with sars-cov-2 virus either 5 or 13 weeks after the second injection were protected from viral replication in the lungs and nose.", "importantly, mice challenged 7 weeks after only a single dose of 1 mcg or 10 mcg of mrna-1273 were also protected against viral replication in the lung ."
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
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