Benchmark 8F
The Designed World: Health Technology
Grades 6-8, page 206

Sanitation measures such as the use of sewers, landfills, quarantines, and safe food handling are important in controlling the spread of organisms that cause disease. Improving sanitation to prevent disease has contributed more to saving human life than any advance in medical treatment.

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.