SAN FRANCISCO — A passenger on an American Airlines flight from India who sat near a woman with drug-resistant tuberculosis has tested positive for TB, federal health officials said.
The Centers for Disease Control and Prevention uncovered the second case after tracking down and testing more than two dozen passengers who sat near the woman on the December flight from New Delhi to Chicago.
But CDC officials cautioned Thursday that because the other passenger had lived in a country where TB is common, they could not determine how the infection was contracted.
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