The World Health Organization (WHO) has raised the health warning of the Swine flu to 6, the highest alert level for a pandemic. The alert level was raised after an emergency meeting was conducted by the WHO experts. This is the first time in the last 41 years that the WHO has had to declare a global flu pandemic.

The Centers for Disease Control and Prevention (CDC) has advised US travelers to avoid non-essential travels to Mexico to avoid contracting the A/H1N1 infection, more popularly known as the Swine Influenza. As of April 27, 2009 there have been 18 laboratory confirmed cases of swine influenza in Mexico.