Send to:

Choose Destination
See comment in PubMed Commons below
Virology. 2000 Aug 15;274(1):26-31.

Chimeric Langat/Dengue viruses protect mice from heterologous challenge with the highly virulent strains of tick-borne encephalitis virus.

Author information

  • 1Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.


Langat virus (LGT), a tick-borne flavivirus, is naturally attenuated for humans but it is very virulent in SCID mice. In contrast, viable recombinant chimeras of LGT (preM and E genes) and dengue type 4 virus (all other sequences) recovered in mosquito cell culture were completely attenuated in SCID mice but still capable of providing protection against LGT. To develop the chimeras into vaccine candidates, we adapted them to replicate efficiently in simian Vero cells, a satisfactory substrate for human vaccines. The adapted chimeras remained completely attenuated for SCID mice and, significantly, provided protection in immunocompetent mice against tick-borne encephalitis virus, the most virulent of the tick-borne flaviviruses.

Copyright 2000 Academic Press.

[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk