Mumps (epidemic parotitis) is a viral disease of the human species, caused by the mumps virus. Before the development of vaccination and the introduction of a vaccine, it was a common childhood disease worldwide. It is still a significant threat to health in developing countries, and outbreaks still occur sporadically in developed countries.
Contributions by Heathhunnicutt, 220.127.116.11, and Midgley.
The lack of vaccinating children for the mumps is what is causing the problem again.
Swelling pain in one/more of salivary glands, fever of 101F to 104F, headache,...