Why did Mary Mallon go back to North Brother Island?

Mary Mallon, better known as "Typhoid Mary," returned to North Brother Island after being forcibly quarantined there due to her role as a carrier of typhoid fever. Despite being asymptomatic, she was linked to multiple outbreaks of the disease, and public health officials sought to prevent further infections. After her initial release, she continued to work as a cook, leading to another outbreak, which prompted her return to the island for the remainder of her life. Her case highlighted the tension between individual rights and public health concerns.