Thanks for the query.
I understand your concern.
Listeriosis can occur due to improperly heated patty and cheese from unpasteurized milk.
If you take properly heated patty and cheese from pasturized milk, the possibility of infection is low.
If you are not sure about cooking conditions, better to avoid or if you know that it is properly cooked, you can have it.
But if you develop any symptoms like fever, gastric disturbances etc, please consult your doctor immediately.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.