What is required for a food worker infected with Salmonella typhi to return to work?

In the case of a food worker infected with Salmonella typhi, a doctor's note is necessary for their return to work. This requirement ensures that the worker has been evaluated by a medical professional who can confirm that the individual is no longer a threat to food safety and is fit to handle food again safely.

Salmonella typhi, the causative agent of typhoid fever, poses significant health risks, particularly in food handling environments. A doctor's assessment typically involves confirming that the worker has recovered enough to resume their duties without risking the health of customers or co-workers. It might include factors like the absence of symptoms and overall health status.

The other options, such as antibiotic treatment, symptom resolution, or a negative laboratory test, may contribute to an overall recovery process but do not alone provide the comprehensive assurance needed for food safety protocols. A doctor's note serves as definitive confirmation that the worker has met the necessary health standards to safely return to food service.