Canned Food

Lore & Background

It states that foodborne botulism happens when food containing the toxin is eaten, often occurring in improperly prepared home-canned food substances and fermented dishes without adequate salt or acidity. The text notes that multiple people are often affected simultaneously because they consume from the same source. It specifies that symptoms usually appear 12–36 hours after eating but can occur within 6 hours to 10 days. The text also mentions that fish pickled without sufficient salinity or acidity, and smoked fish stored at too high a temperature, present risks for toxin production.

In Their Own Story

For instance, the text describes how botulism begins with weakness, blurred vision, fatigue, and trouble speaking, followed by weakness of the arms, chest muscles, and legs. It details that severe cases lead to reduced movement of respiratory muscles, causing dyspnea and potentially fatal respiratory failure due to carbon dioxide buildup. The source mentions that death occurs in 5 to 10% of people, though this figure has fallen from about 50% to 7% over the past 50 years due to improved supportive care.

Reader's Guide

Instead, it provides medical guidelines regarding the prevention and treatment of botulism associated with contaminated food. The source states that prevention is primarily by proper food preparation. It specifies that the toxin (but not spores) is destroyed by heating to more than 85°C (185°F) for longer than five minutes. Spores can be destroyed in an autoclave with moist heat at 120°C/250°F for at least 15 minutes, or dry heat at 160°C/320°F for 2 hours. Commercial canning inactivates group I strain spores by heating at 121°C (250°F) for 3 minutes. The text also notes that treatment involves an antitoxin and may require mechanical ventilation for months if breathing is lost.

Did You Know?

• Botulism is caused by a toxin produced by the bacterium Clostridium botulinum, which thrives in low-oxygen environments.
• The disease typically starts with weakness, blurred vision, and trouble speaking before spreading to the arms and legs.
• Honey can contain C. botulinum spores and should not be fed to children under 12 months of age.
• Botulism does not usually affect a person's consciousness or cause a fever.
• The word 'botulism' comes from the Latin word 'botulus,' meaning 'sausage.'