Willy is right,
The French news mentioned that the Chinese relief planes got there first, search and rescue and medical teams according to the report. The French sent a couple of planes with mobile hospital and more search and rescue, all of Europe are getting their act together, at least the core countries.
The largest support group is being deployed by the US, not that this is a comptetition ... a US aircraft carrier will be there shortly and so will 2 French Navy ships.
I was in Haiti in 1979 (12 years old), a horrible experience to be honest, slums everywhere, the smell of open air sewage, crowds of people living in cardbboard houses, so many people without jobs and really no money at all. That poor little country has been hit hard in the last 10 years, a too harsh dictator caused a rebellion, they've had bad damage due to hurricanes in 2008 and just got to the end of rebuilding what could be before the earthquake struck.
The more help they will get the better, the long years of humanitarian help have ony increased corruption and criminality, a French reporter said that the GDP of Haiti had increased by 3% last year, but 3% of not much is still not much. Maybe this would be an occasion to put the country under UN government, clean out the corrupt administration and rebuild and develop an economy, and bring them back to democracy in the next 20 years or even later. I can't be that hard, they are less than 10 million without national identity, no economy, little education except for their diaspora.
Those people have suffered too much already.
Enough ranting ...
Frank