Isolation of a Sabin-derived type 3-type 2-type 1 recombinant poliovirus from a child with vaccine-associated paralytic poliomyelitis revealed altered antigenic properties.
Case Report (n=1)
The isolation of a capsid intertypic poliovirus recombinant from a child with vaccine-associated paralytic poliomyelitis is described. Virus 31043 had a Sabin-derived type 3-type 2-type 1 recombinant genome with a 5'-end crossover point within the capsid coding region. The result was a poliovirus chimera containing the entire coding sequence for antigenic site 3a derived from the Sabin type 2 strain. The recombinant virus showed altered antigenic properties but did not acquire type 2 antigenic characteristics. The significance of the presence in nature of such poliovirus chimeras and the consequences for the current efforts to detect potentially dangerous vaccine-derived poliovirus strains are discussed in the context of the global polio eradication initiative.
Martín et al. (Fri,) conducted a case report in Vaccine-associated paralytic poliomyelitis (n=1). Sabin-derived type 3-type 2-type 1 recombinant poliovirus (Virus 31043) was evaluated on Viral genomic and antigenic characterization. Isolation of a Sabin-derived type 3-type 2-type 1 recombinant poliovirus from a child with vaccine-associated paralytic poliomyelitis revealed altered antigenic properties.