After 2014 set a record for measles cases in the United States since the disease was eliminated in 2000, The Guardian examines a new outbreak centered on Disneyland in California:

What started as a measles outbreak among seven people who visited Disneyland in December has spread to more than 26, as an unvaccinated California woman apparently transmitted the virus through airports and the theme park, health officials said.

State health departments in California, Colorado, Utah and Washington and have confirmed cases of the extremely contagious virus, the Los Angeles Timesreported on Wednesday. Taken together, the cases would account for almost 12% of the expected measles cases for the entire year (there are 220 cases per year on average, according to the Centers for Disease Control and Prevention).

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The California department of public health said on 7 January that officials believe the woman who started the outbreak was staying in the Disneyland theme park in December. According to the LA Times, the woman is believed to be an unvaccinated traveler in her 20s.

Read the full article here.