Share this postThe first person to mention the concept of natural immunity and herd immunity was Steven E. Greer, MDgreerjournal.substack.comCopy linkFacebookEmailNoteOtherThe first person to mention the concept of natural immunity and herd immunity was Steven E. Greer, MDJan 18, 2022Share this postThe first person to mention the concept of natural immunity and herd immunity was Steven E. Greer, MDgreerjournal.substack.comCopy linkFacebookEmailNoteOtherShareOctober 2, 2021- by Steven E. Greer, MDClick here for the story