ADSORPTION OF INFLUENZA VIRUS

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Abstract
Influenza A and B viruses in allantoic fluid can be adsorbed by certain grades of diatomaceous earths usually employed as filter aids, there being a marked degree of correlation between the 'flow rate' of the earths and their ability to adsorb the virus. Of the clays, kaolin and fuller's earth are similarly able to adsorb the virus as are certain varieties of charcoal. Elution of the adsorbed virus is also possible provided a protein-containing solution such as broth, serum, or isinglass be employed, the highest yield being obtained with virus adsorbed on silica earths and eluted with isinglass solution.

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