Stability of different viruses in a newly developed transport medium

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Abstract
Two media for preserving the viability of different viruses in clinical material during transit at ambient temperature have been developed. One was designed for transporting stool specimens and autopsy material, while the other was designed for such specimens as throat washings, swabs, and cerebrospinal fluid. The essential ingredient in both media was bentonite either uncoated or coated with serum proteins. Preparation of both media is given in detail.Experimental results presented indicate that coxsackie A9, B5, echo 11, adeno 5, influenza A2, parainfluenza, rubella, and herpes simplex viruses could sustain their infectivity without loss of titer in bentonite transport medium for prolonged time, from 3 to 21 days, depending on the virus type.The bentonite transport medium was found to be superior to commonly used charcoal viral transport medium.

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