How is salmonellosis most commonly transmitted?

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Salmonellosis is caused by Salmonella bacteria, so transmission is bacterial. The most common route is ingesting food or drinks contaminated with Salmonella, especially animal-derived foods like poultry, eggs, dairy, and produce that has been contaminated during handling or processing. Raw bean sprouts are a known source when contaminated. The bacteria can also be spread by contact with infected animals and their environments, including pets. This combination of foodborne and animal-contact transmission best fits the scenario, while the other options describe viral, parasitic, or fungal routes that don’t apply.