Photo: Swine Flu Facts, Swine Flu Myths



Wearing face masks to ward off swine flu, worshipers gaze up at Our Lady of Guadalupe's in Mexico City's Basilica de Guadalupe on Sunday, April 26, 2009.

The Catholic church, Mexico's biggest, was shut down and Masses were canceled to prevent large gatherings, which encourage swine flu transmission.

See more swine flu pictures.

Photograph by Julio Cortez/Houston Chronicle via AP


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