PropertyValue
?:creator
?:journal
  • BMJ
?:license
  • unk
?:publication_isRelatedTo_Disease
?:source
  • WHO
?:title
  • Covid-19: Pfizer vaccine efficacy was 52% after first dose and 95% after second dose, paper shows
?:type
?:who_covidence_id
  • #972297
?:year
  • 2020

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