Can you get infection from a toilet seat?

Toilet seats are not usually the common transmissions of infections. There are some organisms that you can get for a toilet seat such as the streptococcus (most common cause of sepsis or blood infection) that we always carry in our skin.

It's possible that you can be one of the carriers after sharing a toilet seat on a public restrooms. Risk of transmission is very small.

Some infections spread in restroom areas other than toilet. One of which is believed to be the used towel rollers and touching of contaminated door knobs and faucets that causes colds and flu.