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Related Experiment Videos

Enterovirus inactivation in soil.

J G Yeager, R T O'Brien

    Applied and Environmental Microbiology
    |October 1, 1979
    PubMed
    Summary

    Virus inactivation in soil is temperature-dependent, with higher temperatures accelerating decay. Drying soils also rapidly inactivate viruses, regardless of amendments or temperature, highlighting moisture

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    EFFECTS OF DEUTERIUM OXIDE AND RADIATION ON YEAST AND FISH. HW-76000.

    HW-SA [reports]. U.S. Atomic Energy Commission·2014

    Area of Science:

    • Environmental microbiology
    • Virology
    • Soil science

    Background:

    • Understanding virus persistence in soil is crucial for public health and environmental safety.
    • Enteroviruses like poliovirus and coxsackievirus can contaminate soil through various sources.
    • Soil characteristics and environmental conditions significantly influence pathogen survival.

    Purpose of the Study:

    • To investigate the inactivation rates of poliovirus type 1 and coxsackievirus B 1 in different soil conditions.
    • To determine the impact of temperature, soil type, and liquid amendments on virus persistence.
    • To elucidate the role of soil moisture and drying in virus inactivation.

    Main Methods:

    • Radioactive labeling of poliovirus type 1 and coxsackievirus B 1.
    • Incubation of labeled viruses in saturated soils with different liquid amendments (surface water, groundwater, septic tank liquor) at controlled temperatures (4°C and 37°C).
    • Assessment of virus infectivity recovery over time; experiments with dried soils and varying moisture levels.

    Main Results:

    • Virus inactivation was directly proportional to temperature; faster inactivation occurred at higher temperatures.
    • Virus persistence varied with soil type and liquid amendment.
    • No infectivity was recovered from saturated soil after 12 days at 37°C, but persisted >180 days at 4°C.
    • No infectivity was recovered from dried soil, irrespective of temperature, soil type, or amendment.
    • Soil water evaporation and low soil moisture levels significantly increased virus inactivation rates.

    Conclusions:

    • Temperature is a primary driver of enterovirus inactivation in saturated soils.
    • Soil moisture content, particularly drying and evaporation, is a critical factor for rapid virus inactivation.
    • Findings have implications for understanding virus transmission pathways and developing effective soil remediation strategies.

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