According to Mayo Clinic, some controllable risk factors for infectious diseases include hygiene, vaccinations and food preparation methods. Changing these factors can have a significant impact on reducing the risk of contracting an infectious disease.
Poor hygiene is one of the leading causes of developing an airborne or contact illness. Wash hands frequently with soap and warm water, especially after using the bathroom and before handling food.
Many medical conditions, such as polio, mumps and measles have vaccines available. Keep all vaccinations up to date to drastically reduce risk.
Raw or undercooked foods can cause salmonella and other types of food poisoning. Keep kitchen surfaces clean during food preparation and promptly refrigerate any leftovers.