Benchmark 6E
The Human Organism: Physical Health
Grades 9-12, page 146

Some viral diseases, such as AIDS, destroy critical cells of the immune system, leaving the body unable to deal with multiple infection agents and cancerous cells.

NSES Content Standard F
Science in Personal and Social Perspectives: Personal and community health
Grades 9-12, page 197
The severity of disease symptoms is dependent on many factors, such as human resistance and the virulence of the disease, producing organism. Many diseases can be prevented, controlled, or cured. Some diseases, such as cancer, result from specific body dysfunctions and cannot be transmitted.