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ARTICLE | ARTICLES

Use of Sindbis/eastern equine encephalitis chimeric viruses in plaque reduction neutralization tests for arboviral disease diagnostics

B.W. Johnson, O. Kosoy, E. Wang, M. Delorey, B. Russell, R.A. Bowen, S.C. Weaver
B.W. Johnson
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O. Kosoy
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E. Wang
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M. Delorey
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B. Russell
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R.A. Bowen
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S.C. Weaver
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DOI: 10.1128/CVI.05129-11
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ABSTRACT

Eastern equine encephalitis virus (EEEV) is a highly virulent, mosquito-borne alphavirus that causes severe and often fatal neurological disease in humans and horses in eastern North American, the Caribbean, Mexico, and throughout Central and South America. EEEV infection is diagnosed serologically by anti-EEEV-specific IgM detection, with confirmation by the plaque reduction neutralization test (PRNT), which is highly specific for alphaviruses. Live virus is used in the PRNT procedure, which currently requires biosafety level 3 containment and select agent security in the case of EEEV. These requirements restrict the ability of public health laboratories to conduct PRNT. Sindbis (SIN)/EEEV recombinant constructs have been engineered to express the immunogenic structural proteins from 2 wild-type EEEV strains in an attenuated form. These SIN/EEEVs, which are not classified as select agents, were evaluated as alternative diagnostic reagents in a PRNT using human, equine, and murine sera. The results indicate that the chimeric viruses exhibit specificity comparable to wild-type EEEV, with only a slight reduction in sensitivity. Considering their benefits in increased safety and reduced regulatory requirements, these chimeric viruses should be highly useful in diagnostic laboratories throughout the Americas.

  • Copyright © 2011, American Society for Microbiology
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Use of Sindbis/eastern equine encephalitis chimeric viruses in plaque reduction neutralization tests for arboviral disease diagnostics
B.W. Johnson, O. Kosoy, E. Wang, M. Delorey, B. Russell, R.A. Bowen, S.C. Weaver
Clinical and Vaccine Immunology Jul 2011, CVI.05129-11; DOI: 10.1128/CVI.05129-11

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Use of Sindbis/eastern equine encephalitis chimeric viruses in plaque reduction neutralization tests for arboviral disease diagnostics
B.W. Johnson, O. Kosoy, E. Wang, M. Delorey, B. Russell, R.A. Bowen, S.C. Weaver
Clinical and Vaccine Immunology Jul 2011, CVI.05129-11; DOI: 10.1128/CVI.05129-11
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