A virus has been isolated from the serum and urine of patients with infectious hepatitis. This virus is a member of the parinfluenza group. It is serologically distinct from the known members of the group, but apparently is antigenically related to the simian type-2 parainfluenza viruses. A causal relationship between WB virus and infectious hepatitis has not been established.
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Liebhaber et al. (1965) studied this question.
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