How can Salmonella Typhi be prevented?

Preventing Salmonella Typhi, which is responsible for typhoid fever, primarily involves ensuring that food is cooked thoroughly to safe temperatures. This pathogen is often transmitted through contaminated food or water, particularly when foods are not adequately cooked or are handled in unsanitary conditions.

Thorough cooking kills the bacteria, minimizing the risk of infection. For instance, cooking poultry, eggs, and other potentially hazardous foods to the appropriate internal temperatures ensures that any Salmonella Typhi present is eradicated.

While refrigeration of leftovers is important for food safety and to slow down bacterial growth, it does not address contamination that may occur before the food is refrigerated. Carrying salmonella in the bloodstream refers to the actual infection process rather than its prevention. Antiseptic wipes can help with hand hygiene but are not a direct method to prevent foodborne illness associated with Salmonella Typhi. Therefore, the most effective preventive measure among the choices given is cooking food thoroughly, which directly eliminates the bacteria before it can cause illness.