MEXICAN officials have banned kissing and ordered minimal human contact as the deadly swine flu toll rises.
Police and militia in Mexico City, source of the outbreak, handed out protective face masks to people on the street.
The US, which has 20 suspected cases, declared a public health emergency, warning the toll would rise sharply.
Authorities vowed to isolate incoming tourists arriving from diseased locations.
Ten students from New Zealand are feared to have caught the disease during a study trip to Mexico.
New Zealand health authorities were trying to track down hundreds of plane passengers who travelled with the group.
Britain has two suspected cases, France four, Spain six and Canada four.