engleski

Mumps Virus Strains Isolated in Croatia in 1998 and 2005: Genotyping and Putative Antigenic Relatedness to Vaccine Strains

Two mumps virus strains 9218/Zg98 and Du/CRO05 were isolated within two locations in Croatia in 1998 and 2005, respectively. The genetic characterization of this temporally distinct mumps virus isolates was carried out in order to determine their genotype and putative antigenic relatedness to mumps virus vaccine strains. Sequence analysis of the small hydrophobic (SH) gene revealed that isolate 9218/Zg98 shows less than 95 % of similarity to any reference strain, thus representing a potential reference strain for a new genotype. Isolate Du/CRO05 clearly belongs to genotype G with the 97 % of homology to the reference strain Glouc1/UK96. When compared to each other, the two Croatian strains have extremely low level of homology of only 89 % indicating no relatedness between them. Putative antigenic properties of the HN protein of these two isolates were compared to different vaccine strains. The results reveal a higher level of homology of antigenic determinants to non-A genotype vaccine strains than to A genotype vaccine strain.

mumps; genotype

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