PropertyValue
?:creator
?:journal
  • BMJ
?:license
  • unk
?:publication_isRelatedTo_Disease
?:source
  • WHO
?:title
  • Covid-19: Past infection provides 83% protection for five months but may not stop transmission, study finds
?:type
?:who_covidence_id
  • #1032022
?:year
  • 2021

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