Final answer:
The specifics of Levi's last experience in the infirmary are not detailed in the given references, which suggest that the question pertains to a figure not directly covered in the provided material.
Step-by-step explanation:
The question focuses on Levi's last experience in the infirmary during a historical wartime period. Considering the provided references and historical contexts, such as the experiences of Dr. LeVasseur and the account of Felix L. Sparks on the liberation of Dachau, we can infer a broader sense of the harsh conditions and the impact of war. From the details given, none of the references specifically mention Levi's personal experience in the infirmary, which suggests that the question could be about a fictional or historical character not directly referenced in the information provided.