Two leukemia patients – a teenage male and a woman in her 40s – are the country’s first documented cases of drug-resistant swine flu,  Eleven others have been reported worldwide.

Seattle Times Science Writer Sandi Doughton reports today that both patients, who had weakened immune systems from chemotherapy and stem-cell transplants, developed flu strains resistant to the anti-viral drug oseltamivir, sold as Tamiflu.

There was no connection between the cases and no threat to the public, said Dr. Jeff Duchin, chief of communicable-disease control for Public Health — Seattle & King County.

Here is a link to the Times’ story and another to a the original report by the Centers for Disease control,