HFRS viral antigen was detected in spleen, small intestine, large intestine and kidney, especially in their small intestine and spleen.

Though CVB3 vaccine can inhibit CVB3B3myocarditis, but it needs mass viral antigen while preparing, so the cost is too high to popularize and use in a large amount.

Specific viral antigen were detected in all organs examined with highest titers in the brain, lung and kidney both by immunofluorescence and immunoperoxidase assays.