PARIS - Here is a snapshot of the current swine flu situation. The World Health Organization puts the threat level at Phase 4 on a scale of 1-6, indicating a "significant increase in risk of a pandemic." (As of April 28, 2009 23:37 GMT +0800)

MEXICO: Epicentre of the current outbreak and only nation with confirmed swine flu deaths (20). Another 132 suspected deaths and 1614 suspected infections

NATIONS WITH CONFIRMED INFECTIONS: Britain 2, Canada 6 (+10-12 suspected), Israel 2, New Zealand 3 (+43 suspected), Spain 2 (+32 suspected), United States 44

NATIONS WITH SUSPECTED INFECTIONS: Australia 70, Austria 1, Chile 8, China several, Colombia 9, Denmark 5, France 20, Germany 2, Hong Kong 4, Indonesia 1, Ireland 3, Netherlands several, Singapore 2, South Korea 1, Sweden 5, Switzerland 5, Thailand 1

NATIONS WITH PARTIAL OR TOTAL BANS ON PORK IMPORTS: China, Croatia, Indonesia, Lebanon, Russia, South Korea, Thailand, Ukraine, Philippines

TRAVEL RESTRICTIONS: Japan tightens visa rules for citizens of Mexico, while Japan, Britain and France advise their nationals against travelling to Mexico. Travel agency Thomas Cook cancels its holidays in Cancun for a week.

EU Health Commissioner Androulla Vassiliou says she sees no need to place restrictions on travel.

NAME: Swine flu (which is different from a disease contracted only by pigs known as swine fever). Because pork is banned under Jewish law, Israel is calling it "Mexican flu."

The World Organisation for Animal Health says the virus is a mix of avian, swine and human viruses and has not been isolated in animals yet. It recommends "North American influenza."