We've been admiring Alfredo Estrella's pictures from Mexico City since the area became the unfortunate epicenter of the swine flu outbreak.

The AFP photographer's images of face-mask-wearing couples are as good a reminder as any that, amid the global swine-flu hysteria, life goes.

Also: That people in Mexico City are tough as fuck, do not scare, and will cut you.

(All pics: Getty Images/AFP/Alfredo Estrella)