Health departments perform food inspections and other health related inspections (the person who performs this job is often called a public health inspector), vaccination programs, free STD and HIV tests, tobacco enforcement and cessation programs, and other medical assistance programs. Health departments also compile statistics about health issues of their area.The role of a health department may vary from one country to the other, but their primary objective is always the same; safeguarding and promoting health. In 1986, several of the world's national health departments met to establish an international guideline by which health departments operate.