The Global Switch: As It Happens – GPEI - Global Polio Eradication ...
2016年4月22日 · Between 17 April and 1 May, the world is marking a historic milestone with 155 countries and territories switching from trivalent to bivalent oral polio vaccine in a globally synchronized manner. Be a part of the action and track countries as they undergo the switch , find out why it is so important and how 155 countries and territories are ...
‘Unqualified failure’ in polio vaccine policy left ... - Science
2024年5月7日 · But “the switch,” as this global move has become known, became “an unqualified failure,” according to an unusually blunt draft report commissioned by the Global Polio Eradication Initiative (GPEI) that is now open for public comments.
Global synchronisation and the switch – GPEI
2016年4月8日 · What is the switch? Between 17 April and 1 May, approximately 150 countries will switch from the trivalent oral poliovirus vaccine (tOPV) to bivalent oral poliovirus vaccine (bOPV). This represents the largest withdrawal of one vaccine, and …
Polio eradication: next steps and future challenges - PMC
2024年11月22日 · At the same time, this switch has created a need for universal use of inactivated polio vaccine (IPV) to ensure immune protection against type 2 poliovirus. Vigorously applied disease control programmes have clearly made huge contributions to the goal of eradication of poliomyelitis, and we are tantalisingly close to the complete elimination.
Polio endgame: the global switch from tOPV to bOPV - PubMed
Type 2 OPV will be withdrawn through a globally synchronized "switch" from trivalent OPV (all three types) to bivalent OPV (types 1 and 3). The switch will happen in 155 OPV-using countries between April 17(th) and May 1(st), 2016.
Poliomyelitis (Polio) - World Health Organization (WHO)
2020年8月16日 · There are six different vaccines to stop polio transmission: Inactivated polio vaccine (IPV) – protects against poliovirus types 1, 2, and 3; Trivalent oral polio vaccine (tOPV) – protects against poliovirus types 1, 2, and 3 - following …
Introduction of Inactivated Poliovirus Vaccine and Switch from ...
2015年7月3日 · IPV will help protect against paralytic polio from type 2 polioviruses, provide a degree of population protection against type 2 poliovirus outbreaks, facilitate responses to any cVDPV2 outbreaks after the switch to bOPV, and aid in eradicating WPV by boosting immunity to types 1 and 3 polioviruses (5).
OPV Cessation – GPEI - Global Polio Eradication Initiative
The Global Polio Eradication Initiative (GPEI) welcomes the expert evaluation of the 2016 global “switch” from the use of trivalent oral poliovirus vaccine (tOPV) to bivalent oral poliovirus vaccine (bOPV) in polio eradication efforts. The GPEI commissioned this evaluation to gain a better understanding of the conditions and challenges ...
Cessation of Trivalent Oral Poliovirus Vaccine and Introduction of ...
2016年9月9日 · To address the risks posed by type 2 circulating vaccine-derived polioviruses, which have caused hundreds of paralytic poliomyelitis cases since 2006, the type 2 component of oral poliovirus vaccine was scheduled for global withdrawal through a synchronized switch from trivalent oral poliovirus vaccine (tOPV) to bivalent oral poliovirus vaccine ...
Systematization of the Introduction of IPV and Switch from tOPV …
2017年7月7日 · The synchronized introduction of the inactivated polio vaccine (IPV) and the switch from trivalent oral polio vaccine (tOPV) to bivalent oral polio vaccine (bOPV) has constituted an effort without precedents, and with astonishing results.