Epidemiology of poliovirus
[PDF File]Chapter 18: Polio; Epidemiology and Prevention of Vaccine ...
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Poliovirus is a member of the enterovirus subgroup, family Picornaviridae. Picornaviruses are small, ether-insensitive viruses with an RNA genome. There are three poliovirus serotypes (type1, type 2, and type 3); immunity to one serotype does not produce significant immunity to the other serotypes.
[PDF File]Report by the Director-General - Global Polio Eradication ...
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All epidemiological data as at end-February 2021. Regularly updated epidemiological data are available at http://polioeradication.org/polio-today/polio-now/this-week/ (accessed 18 March 2021).
[PDF File]Global epidemiology of vaccine-derived poliovirus 2016–2021 ...
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Background Vaccine derived poliovirus (VDPV) remains a major barrier to polio eradication, and recent growing emergences are concerning. This paper presents the global epidemiology of circulating VDPV (cVDPV) by exploring associations between demographic and socioeconomic factors with its recent rise.
[PDF File]Evolving epidemiology of poliovirus serotype 2 following ...
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derived poliovirus (VDPV2) and associated paralytic cases in several continents represent a threat to eradication. The withdrawal of the type-2 component of oral poliovirus vaccine (OPV2) was implemented in April 2016 to stop VDPV2 emergence and secure eradication of all poliovirus type 2. Globally, children born
[PDF File]Polio Endgame Strategy 2019–2023 - World Health Organization
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workers around the world, wild poliovirus now survives in just a handful of districts in only two countries. Looking back, the Polio Eradication & Endgame Strategic Plan 2013–2018 enabled the world to achieve critical wins in cornering the disease by pursuing wild poliovirus and circulating vaccine-derived poliovirus in parallel. From cold chain
[PDF File]Comparative epidemiology of poliovirus transmission - Rohani Lab
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Comparative epidemiology of poliovirus transmission Navideh Noori1,2, John M. Drake1,2& Pejman Rohani1,2,3 Understanding the determinants of polio transmission and its large-scale epidemiology remains a public health priority. Despite a 99% reduction in annual wild poliovirus (WPV) cases since 1988, tackling the last 1% has proven dicult.
[PDF File]Progress Toward Poliomyelitis Eradication — Worldwide ...
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poliovirus vaccine (OPV) strains circulate for a prolonged time in underimmunized populations, allowing reversion to neurovirulence (3). A total of 859 cVDPV cases occurred during 2022, an increase of 23% from 698 cases in 2021. cVDPVs were detected in areas . where poliovirus transmission had long been eliminated (including
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