What is the theme of Typhoid Fever by Frank McCourt?

In Frank McCourt's memoir, "Angela's Ashes", the section titled "Typhoid Fever" does not stand out as a prominent standalone chapter with its own theme. However, the overall theme of "Angela's Ashes" is one of resilience and survival in the face of extreme poverty, hardships, and alcoholism that the McCourt family endured in Depression-era Ireland and New York. The book portrays the unwavering bond between Frank McCourt and his mother Angela, and their struggles to create a better life for themselves and their siblings.