May 25 (Bloomberg) -- Swine flu is spreading more widely than official figures indicate, with outbreaks in Europe and Asia showing it’s gained a foothold in at least three regions.

One in 20 cases is being officially reported in the U.S., meaning more than 100,000 people have probably been infected nationwide with the new H1N1 flu strain, according to the Centers for Disease Control and Prevention. In the U.K., the virus may be 300 times more widespread than health authorities have said, the Independent on Sunday reported yesterday.

Japan, which has reported the most cases in Asia, began reopening schools at the weekend after health officials said serious medical complications had not emerged in those infected. The virus is now spreading in the community in Australia, Jim Bishop, the nation’s chief medical officer, said yesterday.

“I think we will see the number rise,” Bishop told Australian Broadcasting Corp. radio today after confirming the nation’...

On May 3, CDC is scheduled to complete deployment of 25 percent of the supplies in the Strategic National Stockpile (SNS) to all states in the continental United States. These supplies and medicines will help states and U.S. territories respond to the outbreak. In addition, the Federal Government and manufacturers have begun the process of developing a vaccine against the novel H1N1 flu virus.

Response actions are aggressive, but they may vary across states and communities depending on local circumstances. Communities, businesses, places of worship, schools and individuals can all take action to slow the spread of this outbreak. People who are sick are urged to stay home from work or school and to avoid contact with others, except to seek medical care. This action can avoid spreading illness further.

(CNN) -- Pig farmers threw rocks at police officers in Cairo, Egypt, on Sunday as health workers gathered the farmers' herds for slaughter in what the government says is a precaution against the spread of swine flu, an interior ministry official told CNN.

Brig. Gen. Hani Abdel-Latif said 50 to 60 protesters gathered in Cairo's Manshiyet Naser slum because they were upset with the health ministry's decision to slaughter all pigs in the country.

But local media reported the number of farmers clashing with police on Sunday was in the hundreds.

Experts have criticized the Egyptian government's move, announced last week, to slaughter all pigs regardless of whether they are infected.

There have been no confirmed cases of the virus in Egypt.

And according to the U.S.-based Centers for Disease Control and Prevention, humans cannot get the swine flu virus, known to scientists as the H1N1 virus, by eating pork. The CDC says hum...