Botulism, although rare, is a potentially life-threatening illness caused by bacterium. This bacterium is found in the soil and can make its way into foods. The spores can be ingested or inhaled. At that point they move to the gut or intestine to grow. The spores move throughout the body, causing illness. Symptoms can include vision problems, muscle weakness and even respiratory problems. Some foods provide a better environment for the botulism spores, including foods preserved at home or commercial foods that have been improperly stored or cared for.
Condiments
Honey or corn syrup are often associated with infant botulism. Commercial or homemade herb-infused oils, cheese sauces, bottled garlic or other condiments that are kept warm for extended periods of time can carry botulism, according to FoodSafety.gov.
At Home
Any food low in acid, like green beans, pears, asparagus, beats, corn or fermented fish, can be the source of botulism if they are improperly preserved by home canning or even by commercial preparations. The lack of acid makes it easier for the spores to exist. Spoiled canned food or cans with leakage should be thrown out to prevent possible botulism infection. Store all canned items in a cool, dark place to prevent accidental warming. The National Institute of Allergy and Infectious Diseases suggests baked potatoes or tomatoes kept warm instead of hot are likely sources of botulism.
At the Store
When shopping, it is important to avoid foods that are not properly sealed, including fully-cooked, frozen or preserved items. If a bag or container appears to be inflated it should not be purchased. Select foods that are at the proper temperature. For example, when buying frozen food, avoid partially thawed items or those that are towards the front of the freezer. The same is true for refrigerated or heated items. The Food and Drug Administration (FDA) says the most common commercial sources of botulism are sausages, meat products and seafood products. Fish and other water creatures can carry botulism spores in their intestinal tract, gills and claws.
