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Effect of repeated infestations of BALB/c mice with Ixodes ricinus nymphs on tick-borne encephalitis virus infection



Effect of repeated infestations of BALB/c mice with Ixodes ricinus nymphs on tick-borne encephalitis virus infection



Folia Parasitologica 41(4): 312-316



The effect of repeated infestations of BALB/c mice with Ixodes ricinus (L.) nymphs on tick borne encephalitis (TBE) virus infection was studied. Enhancement of nymphal feeding, occurring in noninfected mice during the quaternary infestations, was less apparent or absent in female nymphs engorged on TBE virus infected mice. The mice infected with TBE virus during quaternary tick infestation survived significantly longer (P < 0.01) than mice infected with TBE virus during the primary tick infestation. The mean titre of virus in murine blood (determined by plaque assay) was significantly lower (P < 0.01) and the number of nymphs acquiring virus was reduced (P < 0.05) when feeding on hosts infected during the quaternary infestation. The results indicate that repeated infestations of I. ricinus nymphs on BALB/c mice, although enhancing tick feeding, reduced infection with TBE virus when inoculated intraperitoneally.

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Accession: 002604079

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PMID: 7883261



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