A thallasemic child needed repeated bloodd transfusions got infected by HIV.
Why did the increased number of the HIV virus deteriorate the child's immunity?

A thallasemic child needed repeated bloodd transfusions got infected by HIV. Which diagnositic test showed that the infective virus was HIV?

A thallasemic child needed repeated blood transfusions got infected by HIV. Use a rough diagrammatic sketch and arrows to show how the virus increased in number.