Who is the voice in typhoid fever by Frank McCourt?

In "Typhoid Fever," a memoir by Frank McCourt, the voice is that of a young Frank, reflecting on his childhood experiences in a Catholic school during the 1930s. The narrative is infused with his observations and feelings about life, faith, and family, particularly focusing on his struggles with illness and the strictures of religious education. McCourt's voice is both poignant and humorous, capturing the complexities of growing up in a challenging environment.