HD V有高度的传染性，及很强的致病力。
HDV infection having highly, and very strong with the result that disease dint.
动物实验表明这些菌株对小鼠有较强的致病力和致死率。
But they had high fatality the and pathogenicity to mice in animal experiment.
动物实验表明这些菌株对小鼠有较强的致病力和致死率。
But they had high fatality the and pathogenicity to mice in animal experiment.
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