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用鼠疫强毒菌株50012号、84003号,2.8×10~9个菌/ml,分别感染双辽人蚤狗株6批334只和大理人蚤狗株5批341只,均未形成菌栓。试验表明这两株人蚤不是鼠疫的有效传播媒介。
Inoculation of 6 batches of Shuangliao fleas and 334 batches of 5 batches of Dali flea dogs with Aspergillus plague virulent strains 50012, 84003 and 2.8 × 10 ~ 9 bacteria / ml respectively did not form bacteriostasis. Trials have shown that the two fleas are not an effective vector for plague.