The New Mexico health department reported 30 measles cases in the state on Friday, an increase of 20 cases from its previous count. All the cases were reported in Lea County, that is located adjacent to Gaines County,

An unvaccinated New Mexico resident tested positive for measles upon undergoing a medical examination after dying, but measles so far has not been declared the cause of death.

Health officials in New Mexico are investigating the cause of death of an unvaccinated person who tested positive for measles, the state health department said Thursday.