REACTION OF HOST TO TICK-BITE .2. DISTRIBUTION OF TICK BORNE ENCEPHALITIS-VIRUS IN SUCKING TICKS

  • 1 January 1976
    • journal article
    • research article
    • Vol. 236  (1) , 1-9
Abstract
No reactive histological changes of the dermis and no cement cone formation were observed at the insertion site of tick mouthparts by feeding of Haemaphysalis inermis larvae. Conversely, cement formation was observed by feeding female H. inermis. Dermacentor marginatus larvae fed on viremic mice showed bright fluorescence in esophagus, subesophageal ganglion, salivary glands, a few gut cells and in lumen of Malpighian tubuli. The penetration of virus from esophagus to subesophageal ganglion is the possible route of primary virus infection. Sections through the D. reticulatus nymphs during virus transmission (38 h after attachment) showed specific fluorescence in epidermis and gut cells. This finding agrees with the secretory activity of epidermal and gut cells during feeding.

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