What are the main issues about The Haiti Earthquake?

one cause for concern is health because after the earthquake lots of people gor sick from either dirty water, no sanitation or being flattened by a fallen building. some of the main issues are:
1 safety of the survivors with rehabilitation
2 prevention of disease and containing any outbreak of epidemic and food riots 3 ensuring that world aid reaches the right people
4 rebuilding efforts, and
5 collating data for earthquake research.