Story highlights The unidentified patient died in June

A positive Zika test result came back after the person died

(CNN) Utah health officials said Friday that the death of an elderly patient at the end of June was related to the Zika virus, the first Zika-related death in the continental United States. The unidentified resident of Salt Lake County had traveled to an undisclosed destination where the virus is circulating.

The cause of death has not been determined. "This person had an underlying medical condition and tested positive for Zika, so we know it contributed to [the death], but we don't know that it was the sole cause [of death]," said Dr. Dagmar Vitek, medical director for the Salt Lake County Department of Health. "It may not be possible to determine how the Zika infection contributed to the death," a news release said.

Laboratory confirmation of the virus did not come back until after the individual had died, according to Gary Edwards, executive director of the Salt Lake County Department of Health, who said the department learned of the Zika-related death after a review of the death certificate.

Citing health privacy laws, health officials said that no additional information about the patient will be released. Vitek called the situation tragic and offered condolences to the family of the deceased individual.

To date, there have been no locally transmitted cases of the Zika virus in the United States, although there are 1,132 travel-related cases, according to the Centers for Disease Control and Prevention.

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