The world is the planet Earth and all life upon it, including human civilization. In a philosophical context, the world is the whole of the physical Universe, or an ontological world. In a theological context, the world is the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred.
Should your child require the mumps vaccine post blood testing, you will need to consider getting the combined MMR vaccine done. The single measles and rubella vaccines are still readily available. Alternatively you could bypass the blood testing route and opt for the combined MMR vaccine.
To prevent measles, children (and some adults) should be vaccinated with the measles, mumps, and rubella (MMR) vaccine. Two doses of this vaccine are needed for complete protection. Children should be given the first dose of MMR vaccine at 12 to 15 months of age.