The summer cookout brings with it the risk of sickness from bacteria that can end up spoiling more than one meal. Cook hamburgers incorrectly, and you could end up with a case of E. coli.

"E. coli stands for Escherichia coli, which is a type of bacteria," says Dr. Nipunie Rajapakse, a Mayo Clinic infectious diseases specialist. "Most commonly, we hear about it in raw or undercooked hamburger meat."

Dr. Rajapakse says E. coli bacteria can create some stomach-turning symptoms, such as abdominal pain and nausea. But it can get worse.

"There's a specific type of E. coli.," says Dr. Rajapakse. "It's called O157:H7, which can cause bloody diarrhea and has been associated with a condition that can cause kidney damage, especially in young children."

The elderly are also at higher riskfor problems with E. coli, as are pregnant women, people with underlyingdigestive problems and those with weakened immune systems.

"If somebody were to beexposed to E. coli in something they ate or drank, they may have symptom onsetwithin a couple of days to a few weeks after infection or exposure,"explains Dr. Rajapakse.

She says the best way to avoid a bout with the bacteria is to wash your hands and thoroughly cook your hamburgers.