<div><p>The World Health Organization's flu chief said the swine flu virus has now become the predominant flu strain worldwide.</p><p>In some countries, swine flu accounts for up to 70 percent of the flu viruses being sampled, said Dr. Keiji Fukuda, WHO's top flu official.</p ...

<div><p>WASHINGTON (Reuters) - One million heart attacks, 700,000 strokes and 900,000 miscarriages -- U.S. public health officials want Americans to know these will happen every single year with or without a swine flu vaccine campaign.</p><p>Yet this year, they know a significant number will be blamed on ...

<div id="subtitle">As swine flu returns, US and European officials consider whether _ and when _ to shut schools</div><div><p>As schools around the world reopen, health authorities are bracing for a major spike in swine flu.</p><p>Schools are ideal breeding grounds for ...

<div><p>The World Health Organization's flu chief urged drug makers on Saturday to donate swine flu vaccines to the world's poorest countries, which are more vulnerable in the fight against the pandemic.</p><p>Dr. Keiji Fukuda said the agency is working hard to lobby the world's rich ...