***As of April 19, 2019, there are 10 confirmed measles cases in Butte County***
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The cases are considered part of a cluster outbreak in Butte, Tehama and Shasta Counties. A disease outbreak is the occurrence of cases of a disease in excess of what would normally be expected in a defined community, geographical area or season. Measles is a virus that is highly contagious, and potentially dangerous for those who have not been vaccinated. Here’s what you need to know.