THE ETIOLOGIC AGENTS OF VARICELLA AND HERPES ZOSTER

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Abstract
Fourteen strains of virus derived from the cutaneous lesions of cases of varicella and eight from patients with herpes zoster were propagated serially in primary explant cultures of human preputial or embryonic skin-muscle tissue. Infectious material could not be demonstrated in the fluid phase of infected cultures and inocula for passage therefore consisted of suspensions of infected tissue. Such tissue suspensions when stored in the frozen state did not regularly retain infectivity.