But not all handbags are rife with bacteria, with a bag's quality mainly dependent on the user.

但并非所有的手提包都遍布细菌，手提包的质量主要取决于主人。

youdao

The probability of actually catching the flu or a bacterial infection as a result of cell phone contact is actually dependent on a number of factors how long the viruses or bacteria have been on the phone surface.

FORBES: Can Your Smartphone Spread The Flu?