CHIBA (Kyodo) Japan went on high alert for swine flu Saturday in light of the deadly outbreaks in Mexico, tightening health checks and inspections on passengers and live pigs arriving from the country.

The quarantine station at Narita airport in Chiba Prefecture began using thermographic imaging to check passengers' temperatures to detect fevers that could be caused by swine flu infections, quarantine officials said.

Thermographic imaging uses infrared cameras to measure body temperatures. The cameras will be installed in front of the arrival gate for flights from Mexico.