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Virucidal Approaches for Hemorrhagic Fever Viruses.

Raymond W Nims1, M Khalid Ijaz2

  • 1Syner-G BioPharma, Boulder, CO 80503, USA.

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Summary

This review summarizes virucidal efficacy data for hemorrhagic fever viruses (HFVs). It confirms that lipid-enveloped viruses are susceptible to microbicides and physical inactivation, informing transmission mitigation strategies.

Keywords:
arenavirusesfilovirusesflaviviruseshand hygienehantavirusesnairovirusesparamyxovirusesphenuivirusessurface inactivationsuspension inactivation

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Area of Science:

  • Virology
  • Microbiology
  • Infectious Diseases

Background:

  • Hemorrhagic fever viruses (HFVs) are a group of highly lethal, large, lipid-enveloped RNA viruses.
  • These viruses include arenaviruses, filoviruses, flaviviruses, hantaviruses, nairoviruses, and phenuiviruses.
  • The susceptibility of lipid-enveloped viruses to microbicides is generally understood through the hierarchy of pathogen susceptibility.

Purpose of the Study:

  • To review and summarize empirical data on the virucidal efficacy of various inactivation methods against HFVs.
  • To assess the effectiveness of microbicidal active ingredients, formulated microbicides, and physical inactivation approaches for HFVs.
  • To inform non-pharmaceutical interventions for mitigating HFV transmission risk.

Main Methods:

  • Comprehensive review of primary literature on virucidal efficacy against HFVs.
  • Analysis of data for microbicidal active ingredients, formulated microbicides, and physical inactivation methods (heat, irradiation).
  • Focus on empirical data collected specifically for HFVs, including surface/hand hygiene, liquid inactivation, and diagnostic sample safety.

Main Results:

  • Lipid-enveloped HFVs exhibit susceptibility to microbicides due to their envelope structure.
  • Physical inactivation methods like heat, UV, and gamma irradiation are effective against HFVs.
  • Empirical data confirm the efficacy of various inactivation approaches for HFVs.

Conclusions:

  • Confirmation of expected virucidal efficacies using HFVs directly is prudent due to their high lethality.
  • The reviewed data support the development of effective non-pharmaceutical interventions for HFV transmission control.
  • Understanding virucidal efficacy is crucial for public health strategies against hemorrhagic fever viruses.