Long-Term Excretion of Vaccine-Derived Poliovirus by a Healthy Child [PDF]
ABSTRACT A child was found to be excreting type 1 vaccine-derived poliovirus (VDPV) with a 1.1% sequence drift from Sabin type 1 vaccine strain in the VP1 coding region 6 months after he was immunized with oral live polio vaccine. Seventeen type 1 poliovirus isolates were recovered from stools taken from this child during the following 4 ...
Catherine Fitzharris +9 more
openaire +3 more sources
Detection of vaccine-derived poliovirus circulation by environmental surveillance in the absence of clinical cases [PDF]
On August 25, 2019, the Noguchi Memorial Institute for Medical Research notified the confirmation of a circulating-vaccine-derived poliovirus type-2 (cVDPV2) from the Agbogbloshie environmental surveillance (AES) site, in the Greater Accra Region.
John Kofi Odoom +10 more
openaire +3 more sources
Assessment of poliovirus antibody seroprevalence in high risk areas for vaccine derived poliovirus transmission in Madagascar [PDF]
Vaccine-derived polioviruses (VDPV) outbreaks typically occur in areas of low poliovirus immunity. Madagascar successfully eradicated wild poliovirus in 1997; however, multiple VDPV outbreaks have occurred since then, and numerous vaccination campaigns have been carried out to control the VDPV outbreaks. We conducted a survey of poliovirus neutralizing
M. Steven Oberste +6 more
openaire +3 more sources
Individuals with primary immunodeficiency disorder may excrete poliovirus for extended periods and will constitute the only remaining reservoir of virus after eradication and withdrawal of oral poliovirus vaccine.
Grace Macklin +31 more
doaj +1 more source
Background Poliomyelitis is an acute viral infection caused by poliovirus and transmitted via the fecal–oral route. The causative agent is one of the three serotypes of poliovirus (serotypes 1, 2, 3) that differ slightly in capsid protein.
Joanne Hassan +6 more
doaj +1 more source
Managing the risk of circulating vaccine-derived poliovirus during the endgame: oral poliovirus vaccine needs [PDF]
The Global Polio Eradication Initiative plans for coordinated cessation of oral poliovirus vaccine (OPV) use, beginning with serotype 2-containing OPV (i.e., OPV2 cessation) followed by the remaining two OPV serotypes (i.e., OPV13 cessation). The risk of circulating vaccine-derived poliovirus (cVDPV) outbreaks after OPV cessation of any serotype ...
Kimberly M. Thompson +1 more
openaire +3 more sources
The detection of 3 ambiguous type 2 vaccine-derived polioviruses (VDPV2s) in Uganda
Background The Oral Polio Vaccine (OPV or Sabin) is genetically unstable and may mutate to form vaccine-derived polioviruses (VDPVs). Methods In 2014, two VDPVs type 2 were identified during routine surveillance of acute flaccid paralysis (AFP) cases ...
Mary Bridget Nanteza +9 more
doaj +1 more source
Preventing Vaccine-Derived Poliovirus Emergence during the Polio Endgame
Reversion and spread of vaccine-derived poliovirus (VDPV) to cause outbreaks of poliomyelitis is a rare outcome resulting from immunisation with the live-attenuated oral poliovirus vaccines (OPVs). Global withdrawal of all three OPV serotypes is therefore a key objective of the polio endgame strategic plan, starting with serotype 2 (OPV2) in April 2016.
Margarita Pons-Salort +7 more
openaire +7 more sources
Long-Term Circulation of Vaccine-Derived Poliovirus That Causes Paralytic Disease [PDF]
ABSTRACT Successful implementation of the global poliomyelitis eradication program raises the problem of vaccination against poliomyelitis in the posteradication era. One of the options under consideration envisions completely stopping worldwide the use of the Sabin vaccine.
Olga Ivanova +8 more
openaire +3 more sources
A Survey to Assess Serological Prevalence of Poliovirus Antibodies in Areas With High-Risk for Vaccine-Derived Poliovirus Transmission in Chad [PDF]
Abstract Background World Health Organization African region is wild poliovirus-free; however, outbreaks of vaccine-derived poliovirus type 2 (VDPV2) continue to expand across the continent including in Chad.
Richelot Ayangma +12 more
openaire +2 more sources

