Swine flue virus outbreak

"Swine Flu Virus"
The World Health Organization raised its global alert level on the spreading swine flu virus Monday, but stopped short of declaring a global emergency — even as the U.S. said it was acting as if the outbreak would grow into a full pandemic.

The United States advised Americans against most travel to Mexico and ordered stepped up border checks in neighboring states. The European Union health commissioner advised Europeans to avoid nonessential travel both to Mexico and parts of the United States.

The suspected number of deaths rose to 149 in Mexico, the epicenter of the outbreak with nearly 2,000 people believed to be infected.

The number of U.S. cases doubled to 40, the result of further testing at a New York City school, although none was fatal. Other U.S. cases have been reported in Ohio, Kansas, Texas and California. Worldwide there were 73 cases, including six in Canada, one in Spain and two in Scotland.

While the total cases were still measured in hundreds, not thousands, Mexican Health Secretary Jose Angel Cordova said the epidemic was entering an extremely dangerous phase, with the number of people coming down with the disease mushrooming even as authorities desperately ramped up defenses.

"We are in the most critical moment of the epidemic. The number of cases will keep rising, so we have to reinforce preventative measures," Cordova said at a news conference.

The WHO raised the alert level to Phase 4, meaning there is sustained human-to-human transmission of the virus causing outbreaks in at least one country.