Brazil, for decades a source of migrants to the United States and Europe, is now facing its own humanitarian challenge: applying the international solidarity it trumpets to the Haitians who are arriving in the thousands, in search of a better life. Drawn by the economic boom in Brazil, now the world's sixth largest economy, and the major infrastructure works in preparation for the 2014 football World Cup and the 2016 Olympic Games to be hosted by Rio de Janeiro, some 5,000 Haitians have flocked to this country since the earthquake, according to the Institute of Migration and Human Rights.