The outbreak has been ongoing since August 2016. Currently, 30 workplaces, 29 schools across eight school districts and two private schools are affected by the outbreak.
The mumps are best known for painful, swollen salivary glands that cause puffy cheeks and swollen jaw. It is a highly communicable disease transmitted by person-to-person contact and is typically accompanied by initial symptoms such as fever, headache, muscle aches, tiredness and loss of appetite.
According to the CDC, mumps outbreaks in the United States hit a 10-year high in 2016.
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