[Oldeconomybuyer]

11:33 PST (AP) -- Two passengers and two crew members complained of symptoms similar to those found in Severe Acute Respiratory Syndrome, according to city health officials.

Flight 128 from Tokyo to Mineta San Jose International Airport was stopped on the tarmac short of the gate, and ambulances lined up near the plane as the 125 passengers and 14 crew members waited on board.

American Airlines notified the airport that help was needed after "the captain was informed of a passenger needing medical assistance," said Todd Burke, a spokesman for the airline.

More than 1,600 cases of the illness have been reported so far worldwide, with at least 64 deaths. Officials say it's unclear whether exposure on a flight is sufficient to infect people.