Found 2 matches (2 printed). Sorted by order of appearance (case-insensitive).Number of matches per 100,000 words: 0.61No : Line : Concordance 1: 2858: ible to humans by the bites of rodent fleas. The bubonic plague, in particular, 2: 2953: t the disease is spread by the rodent fleas circulating among wide rodents. How