美国疾控中心：截至5月15日，美国共有31个司法管辖区报告了总计1024例麻疹确诊病例。

Core Insights - As of May 15, a total of 1,024 confirmed cases of measles have been reported across 31 jurisdictions in the United States [1] Summary by Category - Public Health Impact - The outbreak of measles has reached 1,024 confirmed cases, indicating a significant public health concern [1] - The number of jurisdictions reporting cases highlights the widespread nature of the outbreak [1]