Abstract
The reference strains of four serotypes (J6, J8, J9 and J10) of porcine enterovirus isolated in Japan were compared with the international reference strains of 11 serotypes (W1 to W11) by cross neutralization tests. No cross reactions were observed between the two groups, although there were minor one-way crosses between W10 and J10, W11 and J9, and W4 and J9. This leads to our conclusion that all 4 Japanese serotypes can be newly added to 11 international serotypes. J9 virus produced type 1 of CPE (CPE I), J6 and J8 did CPE II, and J10 did CPE III. J10 grew in Vero, HeLa cells, and the primate cells, but J6, J8 and J9 did not.
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