Nasty bacteria cling to the surfaces of countertops. They also stick to medical devices—like catheters—that are placed inside the human body, where they can become a dangerous source of infection.
Individually, bacteria are fairly easily killed. But if they multiply on a surface, they eventually form a biofilm—a tightly organized bacterial community that can fight off antibiotics and the body’s immune system.
Individually, bacteria are fairly easily killed. But if they multiply on a surface, they eventually form a biofilm—a tightly organized bacterial community that can fight off antibiotics and the body’s immune system.


