It's impossible to know how many people could still be trapped but alive beneath thousands of crumbled structures. But with the stifling heat, unsanitary conditions, bodies piling up, electricity outages and food and water in short supply, the fear now is that disease could become as deadly as the quake itself, reports CBS News correspondent Byron Pitts.
The Haitians are desperate for money and manpower.
"lt is a question of public health," said Felix Agustin, the Haitian Consul General to the United States. "We need, we need the help of the international community."
Relief groups already on the ground are having problems of their own. All three emergency facilities run by Doctors Without Borders were destroyed in the quake.
"The best we can offer them at the moment is first-aid care and stabilization," said Paul McPhun with Doctors Without Borders. "The reality of what we're seeing is severe traumas - head wounds, crushed limbs - severe problems that cannot be dealt with at the level of medical care we currently have available."
Read More, Disease Could Become as Deadly as Quake