CNN) -- As more cases of swine flu are reported in various parts of the world, governments and health officials have scrambled to take precautions to prevent the outbreak from entering their borders.

Quarantine officers monitor arrivals with a thermographic device at Bangkok's main international airport.

The World Health Organization urged countries worldwide to look out for "unusual" outbreaks of flu following an emergency meeting. It said it will decide on Tuesday whether to raise the pandemic alert level.

The following is sample of what some countries are doing to combat the outbreak:

CANADA

Cases: Six mild cases

Measures: Issued a travel health notice, saying its public health agency was "tracking clusters of severe respiratory illness with deaths in Mexico."

CHINA

Cases: None

Measures: Banned pork imports from Mexico, and from California, Kansas and Texas in the United States.

INDIA

Cases: None

Measures: Health officials met with representatives of the WHO to discuss preparedness against a potential flu outbreak.

INDONESIA

Cases: None

Measures: Increased surveillance; testing the temperatures of travelers flying into the country.

Watch how public health officials grade phases of pandemic alerts »

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ISRAEL

Cases: Doctors are running tests on two men who recently returned from Mexico with light flu symptoms.

Measures: The Health Ministry has not issued special instructions to the public, nor adopted measures for monitoring those returning from Mexico.

JAPAN

Cases: None

Measures: Will convene a Cabinet meeting Monday to come up with measures to block the entry of the virus into the country. Learn more about swine flu and how to treat it »

Thermographic devices are testing the temperature of passengers arriving from Mexico at Narita International Airport, which serves the Tokyo area.

MEXICO

Cases: The country's health minister says 103 deaths are thought to have been caused by swine flu. An additional 1,614 cases have been reported in the country. Watch efforts in Mexico to prevent spread of the virus »

So far, however, only 26 cases have been confirmed by laboratory tests in Mexico and reported to the World Health Organization.

Measures: Mexico City has closed its schools and universities until further notice.

Troops passed out 4 million filter masks in the city of 20 million residents.

Officials are considering shutting down the bus and subway systems.

Citizens are asked to avoid large crowds, refrain from kissing, and stay at least two meters (six feet) from one another.

The World Bank is offering $205 million to deal with the outbreak.

NEW ZEALAND

Cases: Twenty-two students and three teachers, who returned from a three-week-long language trip to Mexico, remain quarantined at home while the World Health Organization checks specimens to see whether they test positive for swine flu. Ten students tested positive for influenza A -- the general category of strains that includes the H1N1 swine flu. iReport.com: Do you think we should be worried about swine flu?

Measures: Officials are tracing passengers on Air New Zealand flight NZ1, the flight that the college study group took to get back home.

Asked New Zealanders who traveled to Mexico or North America in the past two weeks to get in touch with health officials if they are showing flu-like symptoms.

RUSSIA:

Cases: None

Measures: Banned all meat imports from Mexico and the southern United States.

Announced it will screen incoming passengers from those two countries by taking their temperatures.

Set up a government commission to plan response, and advised citizens against traveling to Mexico.

SOUTH KOREA

Cases: None

Measures: Will test airline passengers arriving from the United States.

SPAIN

Cases: In Spain, about 16 cases were being looked into as possible swine flu infections, the country's health minister said. Lab tests confirmed another case had tested positive.

Measures: "We do not have an emergency situation in Spain, but we are working to prevent any possible development, and we are taking action in accord with the World Health Organization" guidelines, said Health Minister Trinidad Jimenez.

THAILAND

Cases: None.

Measures: Airport officials are keeping a closer eye on passengers arriving from Mexico.

The public health ministry is calling the virus "the flu that has caused an outbreak in Mexico," so that the public does not confuse "swine flu" with "bird flu." The ministry also said it did not want to adversely affect the pork industry.

UNITED ARAB EMIRATES

Cases: None

Measures: The ministry of health issued a circular to doctors asking them to be fully prepared to deal with any potential swine flue cases.

GREAT BRITAIN

Cases: Two cases of swine flu have been confirmed.

Scottish Health Minister Nicola Sturgeon said Tuesday that two patients were being treated at Monklands Hospital in Airdrie. They were "recovering well".

Measures: No travel advisories or quarantines issued.

UNITED STATES

Cases: 40 confirmed. The largest number of cases was in New York, where the Centers for Disease Control and Prevention confirmed the majority were from a preparatory school in that city. An additional seven cases have been confirmed in California; two each in Kansas and Texas; and one in Ohio.

Measures: The government declared a public health emergency to free up federal, state and local agencies and their resources, should the need arise.

Homeland Security Secretary Janet Napolitano canceled a trip to the Czech Republic this week in order to monitor swine flu preparations and response.

AP Medical Writer= ATLANTA (AP) — U.S. health officials say they are "very pessimistic" that the seasonal flu vaccine protects against the unique swine flu infecting people in the United States, Mexico and other countries.

A U.S. Centers for Disease Control and Prevention official said Sunday afternoon that tests of the seasonal vaccine and the new virus show no cross-reaction, suggesting that people who got the vaccine have no added protection against the new bug.

The Cost of Swine Flu

The media has been hyper-focused this weekend on the news that more than 1,000 people in Mexico have become infected with Swine flu, also known as Influenza A H1N1. Nearly 90 people have died from the outbreak. The strain appears to have spread to several countries including the United States. One of the most notable pieces of information about this outbreak is that in the US and Canada the cases have been described as "mild."

One of the first things that accompany news of dangerous flu viruses is an economic evaluation of the effects of a pandemic. In a recent article, Reuters pointed out in 2008 that the IMF said a flu pandemic could cost $3 trillion and cause a 5% drop in global GDP. In other words, it would almost certainly turn the current deep recession into a worldwide depression.

End of Update

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