1887

Abstract

Summary

Mice immunized with Sindbis virus, strains HR (heat-resistant) or AR339, by a dual injection given intracerebrally (i.c.) and intraperitoneally (i.p.) at day zero, were cross-protected from challenge at day 10 with Semliki Forest virus (SFV). Neutralizing and haemagglutination-inhibition antibodies to Sindbis are detected in high titre by day 6 after immunization but no cross-reacting antibodies to SFV were found up to day 42. Immunized mice that were challenged with SFV showed an 8 to 10 day delay in the appearance of antibody to SFV compared to mice that were sham-inoculated. Thus, cross-protection in Sindbis-immunized animals was correlated with a temporary suppression of antibody formation to the challenge virus (SFV), while the appearance of high titre antibody to SFV in sham-immunized mice after challenge with SFV did not protect.

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/content/journal/jgv/10.1099/0022-1317-51-2-351
1980-12-01
2019-10-22
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http://instance.metastore.ingenta.com/content/journal/jgv/10.1099/0022-1317-51-2-351
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