Why do people get Rubella?

I need answers this for a school assignment and i can't find it any where!!

German measles is a mild viral illness caused by the rubella virus. It causes a mild feverish illness associated with a rash, and aches in the joints when it affects adults. The major reason for any attention being devoted to the eradication of this condition is the nasty effects that it has on the unborn baby (known as a fetus), when a pregnant woman catches it in early pregnancy

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I don't know. To test their faith I guess.

because they weren't immunised against it!!

rubella is caused by a virus...one of God's creatures. It is easily transferred by handling things a carrier has handled and not washing your hands before you eat or putting your hands in one of your body orifices. In general rubella is acquired by people too stupid to get vaccinated.
the carrier is one who has not washed is hands after contact with a person who has the disease or a person who is about to break out.

Rubella(German measles)is an infectious disease and is an exanthema caused by an RNA virus, of the Toga virus family. Transmitted to another person by droplet inhalation from an infected person. Neonates with congenital infection, are prominent shedders of the virus , which may be found often as long as 6 months.
Incubation period 14 to 21 days. Period of infectivity is from 7 days before to 4 days after the appearance of the rash.
prevention is by giving MMR vaccine routinely to all children in 2nd year of life. Routine screening of all female adults at child bearing age, and immunized if not done before . And routine screening and immunization in immediate post natal period.