which diseases are harmful infectious or non infectious and why
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disease that is not contagious is called a noninfectious disease. These diseases are not caused by pathogens. Instead, they are likely to have causes such as lifestyle factors, environmental toxins, or gene mutations. Common types of noninfectious diseases include cancer, diabetes, and immune system diseases.
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infectious diseases are caused by pathogens such as viruses, bacteria, and parasites and can be spread by direct contact or through vectors. Noninfectious diseases cannot be “caught” from other humans or animals.Examples of noninfectious diseases include cystic fibrosis, most cancers, cardiovascular diseases such as coronary artery disease, and diabetes
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