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It is a virus and it is contagious.

Most people living in developed countries have been immunized against it (mumps is one of the "M's" in the MMR vaccine) so will have some resistance and probably will not get it even if exposed. While immunization makes catching it less likely it is still possible to get even if you have had the shots. If you have not been immunized or if you have a problem with your immune system then it is highly contagious.

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15y ago

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