1. Since many financial institutions are closed, transport is difficult, and people don't all have their papers (fear of theft also may be an issue), it is almost impossible to receive remittances, which account for more than one-quarter of the country's gdp.
2. The current makeshift shelters are not robust to rain and storms and the rainy season is starting in May. Rain also brings a greater risk of various diseases.
3. The price of food keeps on rising. It was already the case — before the earthquake — that poor people commonly ate mud cakes as a source of nutrition. 54 percent of Haitians live on less than one dollar a day.
4. The party with the ability to make things happen — the U.S. military — isn't formally in charge and is sensitive to bad publicity.
5. In the Darfur crisis, eighty percent of the fatalities came from disease and disease has yet to begin in the Haitian situation.
6. There are already 150,000 accounted-for dead and many more uncounted.
7. It's by no means clear that the aftershocks are over and there is even some chance of a bigger quake to come. This also discourages aid efforts and the construction of more permanent shelter.
8. Outside of some parts of Port-Au-Prince and immediate environs, external aid is barely underway yet damage is extensive.
9. It is not clear that the upcoming planting season — which starts in March — will proceed in an orderly fashion. One-third of the country's population is living at loose ends and most of the country's infrastructure is destroyed. For the planting season many Haitian farmers need seeds, fertilisers, livestock feed and animal vaccines. That planting season accounts for sixty percent of Haiti's agricultural output.
10. Before a limb can be amputated, some doctors have to first go to the market and buy a saw.
Those aren't the only problems.