The Associated Press
LONDON — A strain of bird flu that scientists thought could not infect people has shown up in a Taiwanese woman, a nasty surprise that shows scientists must do more to spot worrisome flu strains before they ignite a global outbreak, doctors say.
On a more hopeful front, two pharmaceuticals separately reported encouraging results from human tests of a possible vaccine against a different type of bird flu that has been spreading in China since first being identified last spring, which is feared to have pandemic potential.
The woman, 20, was hospitalized in May with a. . .

