Mexico
A total of 159 people have died from suspected swine flu, with another 2,498 suspected of having the virus. The deaths have hit the capital, Mexico City, and 17 states, including Mexico State, Veracruz, Oaxaca, Baja California and San Luis Potosí. Oaxaca, Mexico City and Baja California are popular tourist destinations. However, the health secretary, José Córdova, has said only 26 cases, including seven deaths, have been confirmed to be swine flu.
United States
One 23-month-old baby has died of swine flu in Texas. There are 65 confirmed cases, including 28 among students at a school in New York, where there are more than 100 suspected cases. Other confirmed sufferers are in California, Kansas, Texas and Ohio.
United Kingdom
Two Scottish newlyweds are confirmed as having swine flu after returning from their Cancún honeymoon on Tuesday. Seven of their friends and family are being treated with antiviral drugs after showing "mild symptoms" of the illness. NHS Wiltshire has confirmed seven people are being tested for possible swine flu in the county. A woman who complained of feeling ill on a return flight from Mexico to Manchester airport was examined by medics before being sent home. A 62-year-old woman from Canada visiting relatives is being tested for the virus after being taken to hospital in Manchester on Monday complaining of flu. A flight attendant on a British Airways flight from Mexico City to Heathrow who was admitted to hospital with flu-like symptoms has been given the all-clear, as has a Mexican chef who was put in quarantine after showing signs of swine flu at a university in Sussex.
The Irish Republic
Six suspected cases.
Germany
Three confirmed cases, two of whom recently travelled to Mexico.
Spain
Two confirmed cases. Twenty-six other cases are suspected.
France
One suspected case.
Rest of Europe
The EU health commissioner, Androula Vassiliou, says suspected cases are being investigated in Denmark, Sweden, Greece, the Czech Republic and Italy.
New Zealand
Fourteen confirmed cases of swine flu, all except one from a group of students and teachers from Auckland who reported feeling ill following a recent visit to Mexico. Forty-four other suspected cases. Three smaller groups are being monitored after reporting flu symptoms following recent trips to North America.
Canada
Six confirmed cases: two in British Columbia in the west, and four in the Atlantic province of Nova Scotia. All have links to people who have travelled to Mexico.
Israel
Two people have been confirmed as having swine flu after showing flu-like symptoms on return from a trip to Mexico.
Brazil
One man was taken into hospital as a precaution when he became ill after a visit to Mexico.
Australia
Two suspected cases in Queensland tested negative. Officials are testing more than 100 people with flu symptoms for possible swine flu, however the new virus has been ruled out in at least 10 cases.
South Korea
A 51-year-old woman has tested positive for swine flu in initial and secondary examinations, making her a "probable" case, the country's authorities said. Nine other people have reported symptoms since travelling to Mexico or the US. Four tested negative for the virus while five others, including a 15-month-old girl, are still undergoing tests.
Peru and Guatemala
Both have reported the first suspected infections in other parts of Latin America, where health officials fear swine flu has already spread but so far gone undetected.
Malaysia
One person "under close observation" as possibly suffering from swine flu. Health minister, Liow Tiong Lai, has said it is not yet a suspected case because lab tests are still being done.