Pacheco is a census-designated place in Contra Costa County, California. The population was 3,685 at the 2010 census. It is bounded by Martinez to the north and west, Concord to the east, and Pleasant Hill to the south. From Wikipedia
Over 300 people contacted after TB outbreak at California Grand Casino, with most cases genetically linked and associated with staff or casino patrons; health officials have yet to identify ongoing source of transmission.
