
HEALTH OFFICIALS WORLDWIDE TRACK THE VIRUS.
Swine flu crosses new borders Tuesday, reaching the Middle East and the Asia-Pacific region.
At least 152 deaths in Mexico, and some 50 cases have been reported in the U.S. so far.

HEALTH OFFICIALS WORLDWIDE TRACK THE VIRUS.
Swine flu crosses new borders Tuesday, reaching the Middle East and the Asia-Pacific region.
At least 152 deaths in Mexico, and some 50 cases have been reported in the U.S. so far.