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But if they last for more than a week, you may have a bacterial infection.

Now, we're not even sure it was a bacterial infection.

Researchers said 131 children developed one or more serious bacterial infections.

"We still don't know if he had a bacterial infection or a reaction to something."

If this was a bacterial infection, that would be a completely different situation.

Just 5% to 10% of cases are caused by bacterial infection.

He died of a bacterial infection in 2005 after a long illness.

This is, however, one step to take along the road toward the reduction of bacterial infections.

Antibiotics, which are often used when a bacterial infection is considered likely.

People should take antibiotics only when they have a bacterial infection.