[Study on natural infection, biting and transovarial transmission of epidemic haemorrhagic fever virus in Leptotrombidium (L.) scutellare].
In order to clarify the significance of Leptotrombidium (L.) scutellare in transmitting EHF, from Oct. to Nov. 1988, lungs of rodents captured in endemic areas of EHF in Shangxi Province were taken for detecting EHF antigen by IFAT, Twenty-six out of 459 lungs were positive (5.7%). Six strains of EHFV were isolated from L. (L.) scutellare collected from the rodents. In Oct. 1989, 28 Apodemus captured from areas without reported cases of EHF were placed on grassland in endemic areas, free L. (L.) scutellare were lured in all mice and 3 strains of EHFV were isolated. The above results demonstrate that L. (L.) scutellare can naturally be infected by EHFV and can be transmitted via bites. It is also suggested that this species of mites could transmit the disease transovarially. These results further indicate that L. (L.) scutellare can serve as a transmitting vector of EHF.
Zhang
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Institute of Military Medicine, Nanjing Command, PLA.
D000818:Animals; D004197:Disease Reservoirs; D006476:Orthohantavirus / Q000302:isolation & purification; D006480:Hemorrhagic Fever with Renal Syndrome / Q000635:transmission*; D006801:Humans; D007299:Insect Bites and Stings; D007303:Insect Vectors; D008925:Mites / Q000382:microbiology*; D009115:Muridae / Q000382:microbiology