There are now 51 confirmed cases of the highly contagious virus across California, three other states and Mexico, and the Orange County Health Care Agency said the reports of new cases “indicate the measles outbreak will continue to spread.” Health officials had hoped to contain the outbreak to Disneyland visitors who were at the park between Dec. 17 and 20, when the virus spread from perhaps a single infected person or an ill family. But Orange County is now reporting six new cases of measles involving people who did not visit the Anaheim attraction during that period. State officials said...