Measles had struck this West Texas town, sickening dozens of children, but at the Community Church of Seminole, more than 350 worshippers gathered for a Sunday service. Sitting elbow-to-elbow, they filled the pews,

Texas’ health commissioner told lawmakers Monday they are still trying to determine the origin of a South Plains-Panhandle measles outbreak more than a month after the first patients reported symptoms.

The number of measles cases associated with an outbreak in Texas has increased to 159 -- an increase of 13 cases in the past five days, authorities said on Tuesday.