'No clear answer': Few clues in case of girl sickened by foreign bacteria as others test positive

A medical mystery emerging in three states took a concerning turn over the weekend as seven family members in Texas tested positive for potential exposure to a deadly type of bacteria that isn’t supposed to be found in the continental United States.

Disease detectives from the Centers for Disease Control and Prevention have told the family of Lylah Baker, a 4-year-old girl hospitalized in Dallas, that blood tests show several of them have antibodies to the bacteria, called Burkholderia pseudomallei, that has sickened Lylah with devastating consequences.