Flu samples from a 4-month-old American baby in Tokyo suffering from type A influenza were being tested at a Japanese lab Saturday to determine whether it is the new swine-avian-human flu.

The results of the genetic screening, which is being conducted by the National Institute of Infectious Diseases in Tokyo, may find whether the baby has the new H1N1 flu. The results were expected later in the day, the Health, Labor and Welfare Ministry said.

The baby arrived at Yokota Air Base from the United States on Friday and tested positive for the A strain in a preliminary test. The results are expected to be passed on to the U.S. military and then to the Foreign Ministry.