Federal health officials are investigating whether a worker who traveled to Asia may have infected a co-worker with a respiratory virus that may be linked to severe acute respiratory syndrome (SARS). Health officials are trying to determine if a 60-year-old woman in Florida may have infected a 47-year-old co-worker, according to the Associated Press.

The Centers for Disease Control and Prevention (CDC) cautions that it is too early to tell whether the co-workers have SARS or some other illness. But the CDC says the co-workers show symptoms that suggest the respiratory illness.