This is a list of diseases known (or declared) to have been eliminated from the United States, either permanently or at one time. ("Elimination" is the preferred term for "regional eradication" of a disease; the term "eradication" is reserved for the reduction of an infectious disease's global prevalence to zero.) Eliminated diseases can often be re-imported without additional endemic cases. Although no fixed rule always applies, many infectious diseases (e.g., measles) are considered eliminated when no cases have been reported to public health authorities for at least 12 months.
Various public health projects are going on, with a goal of eliminating diseases from the country. Several infectious diseases in the United States, not on the above list, are considered close to elimination (98âÂÂ99% reductions): e.g., Hemophilus influenzae, mumps, rubella and congenital rubella. Other disease pathogens (e.g., those of anthrax, rabies and tetanus) have been almost eliminated from humans in the US, but remain as hazards in the environment, so cannot accurately be described as eliminated. The stated goal of "eradication" of hookworm from the southeast US (1915âÂÂ1920) was not achieved, although the hookworm-infection rate of that region did drop by more than half.