- Infectious Diseases: Such as measles, influenza, and tuberculosis, which can be prevented through vaccination, hygiene, and other public health measures. - Non-communicable Diseases: Like heart disease, diabetes, and certain cancers, which can be prevented through lifestyle modifications such as diet, exercise, and avoiding tobacco use. - Vector-borne Diseases: Such as malaria and dengue, which can be prevented through vector control measures like insecticide-treated nets and environmental management.