Nine visiting mayors from the Union of Ibero-American Capital Cities on Sunday received the title of distinguished citizens from the Mexico City's mayor.
The nine cities are namely Paraguay's Asuncion, Colombia's Bogota, Argentina's Buenos Aires, Panama's Panama City, Bolivia's La Paz, Peru's Lima, Quito, Chile's Santiago and El Salvador's San Salvador.
Mexico City's mayor Marcelo Ebrard said their visit was an honor, and "even more so now after the extremely harsh emergency we have lived through, a health emergency which by good fortune we survived."
Mexico City was worst hit by the A/H1N1 influenza, which has infected nearly 22,000 people worldwide and claimed 125 lives. City authorities closed schools and most businesses from April 23 to May 10 to prevent the spread of the flu.
In Mexico, the flu killed 103 people and infected some 5,560.