title: [Study on vector ability of Nosopsyllus wualis leizhouensis in the transmission of plague].
abstract: OBJECTIVE
  To find out the vector ability and function of Nosopsyllus wualis leizhouensis in the transmitting plague.
  
  
  METHODS
  In T: 19 degrees C +/- 1 degrees C, RH: 85% +/- 5%, data regarding the vector ability as cluster spreading, single flea spreading, single flea transmitting plague to single animal, formative bacterial embolus and infection fleas life-span through experiments was gathered.
  
  
  RESULTS
  The rate of infection on fleas was 94.64%, with 100% transmission rate of colony to spread, and 30% from single flea spreading to single animal. In the experiment of single flea transmission, all of the 388 rattus loseas were bitten by the fleas with bacterial, but only 9 animals were characteristically infected with the transmission potential, vector efficiency, survival potential of embolus, vector index as 0.360, 0.257, 0.868 and 0.223 respectively. The mean survive days of infected flea feed with blood were 17.58 (1 - 58), and the mean survive days of hunger infected flea were 7.25 (1 - 16). Formative bacterial embolus days were 8.80 (2 - 16) and the rate of embolus flea was 78.12%.
  
  
  CONCLUSIONS
  Nosopsyllus wualis leizhouensis could serve as vector and important in the mode of plague transmittion.
authors.affiliation: Zhanjiang Institure of Plague Disease Control and Research, Zhanjiang 524037, China.
authors.forename: Han-biao
authors.initials: HB
authors.lastname: Ou
authors.forename: Rong-xuan
authors.initials: RX
authors.lastname: Shen
authors.forename: Hai
authors.initials: H
authors.lastname: Mai
authors.forename: Guang-xiang
authors.initials: GX
authors.lastname: Dai
authors.forename: Man-qing
authors.initials: MQ
authors.lastname: Zhang
authors.forename: Hua-yuan
authors.initials: HY
authors.lastname: Yang
authors.forename: Yu-lian
authors.initials: YL
authors.lastname: Li
authors.forename: Min
authors.initials: M
authors.lastname: Zeng
authors.forename: Xiang-ming
authors.initials: XM
authors.lastname: Yu
mesh_terms: D000818:Animals; D005260:Female; D007303:Insect Vectors / Q000382:microbiology*; D008297:Male; D010930:Plague / Q000635:transmission*; D051381:Rats; D005423:Siphonaptera / Q000382:microbiology*