So far unknown how he was infected.
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Health officials on Friday confirmed the first case of an American infected with a mysterious virus that has sickened hundreds in the Middle East.
The man fell ill after flying to the U.S. late last week from Saudi Arabia where he was a health care worker.
He is hospitalized in good condition in northwest Indiana with Middle East respiratory syndrome, or MERS, according to the Centers for Disease Control and Prevention and Indiana health officials, who are investigating the case.