Travel ban:

The Texas Health and Human Services Commission has banned workers in five state agencies from traveling to Mexico to conduct research or work on binational health programs because of fears of kidnappings and other drug-cartel-fueled violence.

New Mexico health officials also have reduced travel to Mexico because of safety and budget concerns, a spokeswoman said.

California recently restricted health department employees' travel in Mexico to daylight hours.

The Texas commission informed employees of the state's health and human services system in late February.

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