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  • Robert W. Linkins, Esmat Mansour, O M Wassif, Mohd Hasyizan Hassan, Peter A. Patriarca
  • Medicine
  • Bulletin of the World Health Organization
  • 1995 (First Publication: 1 September 1995)
  • Among poliomyelitis eradication activities recommended by WHO are national immunization days. Most campaigns have delivered oral poliovirus vaccine (OPV) from fixed sites, reaching 80-90% of targetContinue Reading