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British Journal of Experimental Pathology logoLink to British Journal of Experimental Pathology
. 1988 Apr;69(2):197–208.

CNS pathogenesis following a dual viral infection with Semliki Forest (alphavirus) and Langat (flavivirus).

S Amor 1, H E Webb 1
PMCID: PMC2013224  PMID: 2837265

Abstract

Mice inoculated intraperitoneally with the alphavirus Semliki Forest were protected against a subsequent challenge with the flavivirus Langat. The protection was seen as a reduction in the Langat virus titres, mortality index and percentage deaths. The severity of the brain pathology was greater in the simultaneously infected mice, or when the time interval between administration of the viruses was 7 days, compared to that seen following a single infection of either Semliki Forest or Langat virus. When the time interval was greater than 14 days the severity of the histopathological lesions were reduced. Two factors were considered to be of possible importance in the protection afforded by the original alphavirus. Either persistence of the alphavirus interfering with the challenge flavivirus or cross-reactive immunity arising from a common host cell membrane derived glycolipid component present in both viral envelopes. This latter phenomenon could be important as anti-glycolipid activity present at 14 days after the first virus increased significantly after challenge with the second virus.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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