Rapid field test for detection of hantavirus antibodies in rodents

H Sirola1, E R Kallio, V Koistinen

  • 1Department of Chemistry, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland.

Insights

A new rapid test accurately detects Puumala virus (PUUV) antibodies in bank voles. This tool aids in studying PUUV prevalence and related hantavirus infections in rodents, improving upon laborious traditional methods.

Area of Science:

  • Veterinary Virology
  • Immunology
  • Rodent Ecology

Background:

  • Puumala virus (PUUV) causes nephropathia epidemica in humans.
  • Transmission occurs from infected bank voles (Clethrionomys glareolus) via excreta.
  • Current PUUV prevalence screening methods are time-consuming, involving field sampling and lab analysis.

Purpose of the Study:

  • To develop a rapid, serological immunochromatographic test for detecting anti-PUUV IgG antibodies in rodents.
  • To facilitate efficient screening of PUUV prevalence in bank vole populations.
  • To assess the test's efficacy with various sample types and its ability to detect related hantaviruses.

Main Methods:

  • Development of an immunochromatographic rapid test utilizing PUUV nucleocapsid protein as the antigen.
  • Testing the efficacy of the rapid test with fresh, undiluted bank vole blood samples (n=105).
  • Evaluating the test's performance with frozen and diluted bank vole blood samples (n=78) and with blood from Norway lemmings and sibling voles (n=31).

Main Results:

  • The rapid test demonstrated 100% efficacy with fresh bank vole blood samples.
  • Efficacy was 91% with frozen and diluted bank vole blood samples.
  • The test showed 99% efficacy in detecting related hantavirus infections in other rodent species.

Conclusions:

  • The developed immunochromatographic test is a highly effective tool for detecting PUUV infections in bank voles.
  • This rapid test significantly simplifies and accelerates the study of PUUV and related hantavirus epidemiology in arvicoline rodents.
  • The test offers a practical solution for field and laboratory screening, improving disease surveillance capabilities.

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