Visit the archaeological sites of Mexico is prohibited.

Medportal.ruKaliforniya 04/200928.04.2009Voprosy & A on pigskin grippeVlasti Mexico banned visiting archaeological sites in the country to prevent the spread of pig influenza transmits Wednesday Agence France-Presse.
Restrictions apply, including the famous pyramid at the Mayans and Aztecs. The ban will work "until further notice," said National Institute of Anthropology and History in Mexico.
On Tuesday, reminds agency Associated Press, Mexico City authorities ordered the closure of public enterprises, sports clubs, swimming pools and billiard. Earlier work was limited to night clubs, cinemas, museums and zoos. Schools will not work at least until May 6. According to eyewitnesses, the 20 millionth city is almost deserted, but on the capital's streets are not marked the usual traffic jams.
Epidemic of atypical influenza, known as pork because of the similarity of proteins previously unknown virus, the causative agent of influenza H1N1 and swine, started in Mexico in mid-April. According to recent data, the disease has already affected 10 states, at least 149 cases resulted in death. World Health Organization expressed concern at the situation in Mexico, raising the threat level to the fourth phase of distribution, but the signs of a pandemic, WHO has not yet been recorded.
Meanwhile, in neighboring Mexico United States are also taken emergency measures on non-proliferation of porcine influenza. Thus, on 28 April in California, which already has 11 patients, state of emergency was declared. Only six states identified 65 cases of infection, several schools, including the states of New York and Texas, canceled classes.
Also on Tuesday it became known that Cuba, where the infection has not yet been fixed, and Canada to suspend flights to Mexico.