National

May 1, 2009 7:33 PM

Researchers can't agree on severity of swine flu outbreak

More than a month into the swine flu outbreak that has now affected 13 countries, medical experts are wondering aloud whether the contagious disease will ever become the deadly pandemic that everyone fears. With at least 143 infections now confirmed in 23 states, the H1N1 virus continues to spread via person-to-person transmission. But they overwhelmingly have been mild.

Related content

Comments

Videos

More Videos

Video: Yellowstone grizzly bears: A success story <span class='title-duration'>09:02</span> 09:02

Video: Yellowstone grizzly bears: A success story 09:02

Offshore corporations: The secret shell game <span class='title-duration'>02:24</span> 02:24

Offshore corporations: The secret shell game 02:24

Offshore corporations - The secret shell game <span class='title-duration'>02:24</span> 02:24

Offshore corporations - The secret shell game 02:24

Obama's last White House Correspondents' Association Dinner speech <span class='title-duration'>32:40</span> 32:40

Obama's last White House Correspondents' Association Dinner speech 32:40

The Americans in the Panama Papers <span class='title-duration'>01:40</span> 01:40

The Americans in the Panama Papers 01:40

A look inside San Quentin's death row <span class='title-duration'>01:55</span> 01:55

A look inside San Quentin's death row 01:55

'Hamilton' star Lin-Manuel Miranda freestyles with President Obama <span class='title-duration'>01:44</span> 01:44

'Hamilton' star Lin-Manuel Miranda freestyles with President Obama 01:44

Harnessing the power of water to turn it into electricity <span class='title-duration'>03:51</span> 03:51

Harnessing the power of water to turn it into electricity 03:51

Muslim feminist challenges stereotypes with literature <span class='title-duration'>03:10</span> 03:10

Muslim feminist challenges stereotypes with literature 03:10

Share Video

Nation & World Videos