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. |