The Chinese released the genetic sequence from another case. It's missing the mammalian adapted gene from earlier sequences, but it does have a different mammalian sequence that H5N1 research has found increases transmission. Yet another example of this bird flu adapting itself to humans.

It's also another case where mammalian genes are found in a human case, but in none of the bird sequences released so far. This new sample still supports the theory that the virus is picking up these mammalian genes by passing between people.

Although many have praised the Chinese for their transparency, especially in light of how they hid the SARS outbreak until it burst onto the international scene, experts have wondered why the Chinese have released so few genetic sequences from the 91 confirmed cases so far. They certainly have the technological means and capacity to sequence all of the samples very rapidly and publish the results.