The researchers took samples from 58 rodents, including 53 brown rats, 2 mice (Mus musculus) and 3 black rats (Rattus rattus). 6 of the rodents were found to be carrying Bartonella bacteria;

• 研究者们分析了58例啮齿类动物样本，包括53例褐鼠、2例小鼠和3例黑鼠。