 Vaccination programs and distribution of condoms to prevent the spread of communicable diseases are examples of common preventive public health measures, as are educational campaigns to promote vaccination and the use of condoms (including overcoming resistance to such).Public health also takes various actions to limit the health disparities between different areas of the country and, in some cases, the continent or world.One issue is the access of individuals and communities to health care in terms of financial, geographical or socio-cultural constraints.