Experimental study on role of mites in transmission of Hantaan virus

  Objective   To study the roles of gasmid mite and chigger mite in the transmission of Hantaan virus(HV).

  Methods   Natural gasmid mite, the first generation gasmid mite, chigger mite larvas from rats, free chigger mite larva and nymph were collected and their cells were cultured to study the role of transmission HV.

  Results   HV was detected from mite cells after 15 and 20 days of cultured.The number of HV and fluorescence intensity detected from the third and fourth generation gasmid mite and chigger mite nymph were much more than those from the tfirst, second generation and chigger mite larva.The signal particles in the third and fourth generation cells of gamasid mites and nymph cells of chigger mites were more than that in the first and second generation cells of gamasid mites and larva cells of chigger mites.

  Conclusion   Gasmid mite and chigger mite had an important role in playing on HV transmission in keeping natural cycles.