A 30-year-old woman infected with a hard-to-treat form of tuberculosis has U.S. health officials seeking dozens of international passengers who may have flown with her from India and also in the United States.

The woman, who authorities declined to identify, is recovering in a San Francisco Bay Area hospital. She arrived in San Francisco Dec. 13 aboard an American Airlines flight that she boarded in New Delhi, India. The flight stopped in Chicago before continuing to San Francisco International.

Health officials said that despite being diagnosed with TB in India, she boarded the flight anyway. U.S. officials have little authority over who boards incoming international flights. Such passengers are typically barred from boarding flights originating in the United States.

"She did have symptoms on the flight," said Santa Clara County Health Director Dr. Marty Fenstersheib. "She was coughing."

About a week after the flight landed, the woman walked into the Stanford Hospital emergency room with advanced symptoms of the disease. Hospital spokesman Gary Migdol said the woman is being treated in isolation and is in stable condition.

Fenstersheib said the woman will remain hospitalized until she tests negative for the disease, which could take a least two weeks. Fenstersheib said her stay could last longer because she has a strain of the disease that resists the most common antibiotics.

Officials with the Centers for Disease Control and Prevention are asking health authorities in 17 states to contact 44 people who sat within two rows of the woman and urge them get checked for tuberculosis. The risk of infection is far lower than passing on influenza or the common cold, doctors said.

CDC spokeswoman Shelly Diaz said the agency has not received any reports back. Diaz said it will take more than eight weeks to receive definitive results.

(China Daily January 4, 2008)