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Rotavirus stability and inactivation.

M K Estes, D Y Graham, E M Smith

    The Journal of General Virology
    |May 1, 1979
    PubMed
    Summary
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    Simian rotavirus (SA11) and reovirus type 1 exhibit distinct stability patterns. SA11 shows resistance to various treatments, unlike reovirus, allowing differentiation based on inactivation responses.

    Area of Science:

    • Virology
    • Microbiology

    Background:

    • Rotaviruses and reoviruses are significant viral pathogens.
    • Understanding viral stability is crucial for disinfection and handling protocols.

    Purpose of the Study:

    • To compare the infectivity stability of Simian rotavirus SA11 and reovirus type 1.
    • To identify differential inactivation patterns between rotaviruses and reoviruses.

    Main Methods:

    • Analysis of Simian rotavirus SA11 infectivity.
    • Comparison with reovirus type 1 stability.
    • Assessment of stability against physical (freeze-thawing, sonication, temperature) and chemical (pH, solvents, salts) agents.

    Main Results:

    • Simian rotavirus SA11 infectivity remained stable after freeze-thawing, sonication, and incubation at 25°C or 37°C.

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  • SA11 was inactivated by heat at 50°C, above pH 10.0, and by MgCl2, but stabilized by MgSO4.
  • Reovirus 1 showed enhanced infectivity with MgCl2 and was inactivated by freezing in MgCl2.

    • Conclusions:

    • Rotaviruses and reoviruses can be distinguished by their unique inactivation profiles.
    • Differential stability suggests distinct structural or biochemical properties between the two virus families.