Posted Tuesday, May 26, 2009 --- 7:25 a.m.

CHICAGO (AP) -- The world's largest vaccine maker has signed a deal with the United States to produce a swine flu vaccine.

Sanofi Pasteur says it's won a $190 million order to make the vaccine for the U.S. and is talking to other governments about their needs.

Meanwhile, authorities in Mexico have announced three more swine flu deaths and the U.S. and Canada one more each.

Bahrain is reporting its first case; it's also the first in a Gulf Arab country.

And Mexico has unveiled a $90 million campaign to lure back tourists. It features ads with opera singer Placido Domingo, champion golfer Lorena Ochoa and other national heroes.

Tourism is Mexico's third-largest source of legal foreign income, but worries over swine flu have sent hotel occupancy rates to a record low.

And in New York City, students are returning to more than two dozen public schools that had been closed because of swine flu.

Copyright 2009 by The Associated Press. All Rights Reserved.