An annotated Google map listing suspected and confirmed cases of H1N1 Swine Flu is now available. 

The CDC also has a swine flu page .  Updates available via email, Twitter, or RSS.

The World Health Organization (WHO) coordinates global response to human cases of swine influenza.

Other sources of information (in Spanish):
Organizacion Panamericana de la Salud – Mexico
Secretaria de Salud – Mexican Ministry of Health