AIDS is the disease caused by the damage that HIV does to your immune system. You have AIDS when you get rare, dangerous infections or have a super low number of CD4 cells. AIDS is the most serious stage of HIV, and it leads to death over time.
1 One in every 330 Americans will develop cancer by the age of 20. 2  On the average, 12,500 children and adolescents in the U.S. are diagnosed with cancer each year. 3  On the average, 1 in every 4 elementary school has a child with cancer. 4  The average high school has two students who are a current or former cancer patient.
1 In the UK an average of around 1,600 children are diagnosed with cancer each year, that's 30 children every week. 2  Around 1 in 500 children in Great Britain will develop some form of cancer by 14 years of age. 3  Leukaemia is the most commonly diagnosed cancer in children.