title: Risks associated with the use of live-attenuated vaccine poliovirus strains and the strategies for control and eradication of paralytic poliomyelitis.
abstract: The Global Polio Eradication Initiative was launched in 1988 with the aim to eliminate paralytic poliomyelitis. Two effective vaccines are available: inactivated polio vaccine (IPV) and oral polio vaccine (OPV). Since 1964, OPV has been used instead of IPV in most countries due to several economic and biological advantages. However, in rare cases, the live-attenuated Sabin strains of OPV revert to neurovirulence and cause vaccine-associated paralytic poliomyelitis in vaccinees or lead to emergence of vaccine-derived poliovirus strains. Attenuating mutations and recombination events have been associated with the reversion of vaccine strains to neurovirulence. The substitution of OPV with an improved new-generation IPV and the availability of new specific drugs against polioviruses are considered as future strategies for outbreak control and the eradication of paralytic poliomyelitis worldwide.
authors: University of Thessaly, School of Health Sciences, Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, Larissa, Greece. bpliaka@yahoo.com
authors: Vaia
authors: V
authors: Pliaka
authors: Zaharoula
authors: Z
authors: Kyriakopoulou
authors: Panayotis
authors: P
authors: Markoulatos
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007223:Infant; D009154:Mutation; D011051:Poliomyelitis / Q000517:prevention & control* / Q000821:virology; D017955:Poliovirus / Q000235:genetics / Q000276:immunology / Q000472:pathogenicity; D011054:Poliovirus Vaccine, Inactivated / Q000009:adverse effects* / Q000627:therapeutic use; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects* / Q000627:therapeutic use; D012306:Risk; D055815:Young Adult
chemical_list: D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral