For sufficiently wide stairs, a rail is mounted to the treads of the stairs. A chair or lifting platform is attached to the rail. A person on the chair or platform is lifted as the chair moves along the rail. Stairlifts are known variously as stair lifts, stair-lifts, chair lifts, stair gliders and by other names. This type of chair lift should not be confused with the chairlift used by skiers. The term stair climber can refer either to stair lifts, or more commonly to the exercise equipment by the same name. Some of the first stairlifts to be produced commercially were advertised and sold in the USA in the 1930s by the Inclinator Company of America. Many users at the time were victims of polio.
A disease of cattle and swine caused by tapeworm larvae. measles. An infectious disease caused by the rubeola virus of the genus Morbillivirus, characterized by fever, cough, and a rash that begins on the face and spreads to other parts of the body. Vaccinations, usually given in early childhood, confer immunity to measles.
Rubella (German measles) is a common mild disease characterized by a rash. It affects children and adolescents worldwide and can also affect young adults.